Re: [sage-support] Sage Crash Report
Thank you Dima and Isuru, creating a new conda environment worked! (I'm guessing you updated the givaro dependency for the conda install) And it looks like manually specifying an older version of givaro will also work, based on Mariusz's report. On Wed, Mar 24, 2021 at 3:21 PM Mariusz Sokolowski wrote: > hey, > > I had similar/same(?) problem as Mike and installing older version of > givaro (conda install "givaro=4.1.1=h192cbe9_1") fixed it. > > -M > > On Wednesday, March 24, 2021 at 12:55:05 PM UTC-4 isu...@gmail.com wrote: > >> Mike, >> >> Can you try creating a new conda environment? This is an issue with the >> latest givaro build we had and we marked it as broken. >> Details at https://github.com/conda-forge/givaro-feedstock/issues/13 >> >> (You could also try doing `conda install "givaro=4.1.1=h192cbe9_1"` to >> get the older link.) >> >> Isuru >> >> On Wed, Mar 24, 2021 at 9:07 AM Mike Lee wrote: >> >>> Not sure if this is relevant, but I get the following messages when I >>> try running 'conda update givaro' in my sage conda environment (attached). >>> I apologize for multiple messages! >>> >>> On Wed, Mar 24, 2021 at 8:42 AM Mike Lee wrote: >>> I believe the following line in the output of the nm command you suggested is the corresponding symbol? 00017da0 T Givaro::Integer::operator std::__cxx11::basic_string, std::allocator >() const I've also attached the full output of the nm command as a txt file below in case it's helpful! On Wed, Mar 24, 2021 at 5:41 AM Dima Pasechnik wrote: > On Tue, Mar 23, 2021 at 10:27 PM Mike Lee wrote: > > > > Hi, > > > > I'm facing a similar issue when I tried to install Sage through > conda (I followed the 'Setting Up' directions in > https://wiki.sagemath.org/Conda). I get the following error in my > Sage_crash_report.txt (attached) > > > > 'ImportError: > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/ > matrix_modn_sparse.cpython-39-x86_64-linux-gnu.so: undefined symbol: > _ZNK6Givaro7IntegercvNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEB5cxx11Ev' > > this is, demangled: > > $ c++filt > _ZNK6Givaro7IntegercvNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEB5cxx11Ev > Givaro::Integer::operator std::__cxx11::basic_string std::char_traits, std::allocator >[abi:cxx11]() const > > Can you find this in the output of > > $ nm -D --demangle > /home/msl/software/miniconda3/envs/sage/lib/libgivaro.so.9 > > Perhaps, wrong C++ standard version chosen somewhere? > > Maybe Isuru knows what's wrong there. > > > > > What could I do to fix this issue? Thank you in advance for the help! > > > > By the way, when I run 'ldd > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/ > matrix_modn_sparse.cpython-39-x86_64-linux-gnu.so ' I get the > following output: > > > > linux-vdso.so.1 (0x7ffde17a7000) > > liblinbox.so.0 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../liblinbox.so.0 > (0x7fa325ba) > > libfflas.so.1 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libfflas.so.1 > (0x7fa325ad4000) > > libblas.so.3 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libblas.so.3 > (0x7fa323ae3000) > > libgivaro.so.9 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libgivaro.so.9 > (0x7fa323a88000) > > libflint.so.14 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libflint.so.14 > (0x7fa32320d000) > > libntl.so.43 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libntl.so.43 > (0x7fa322fca000) > > libgmp.so.10 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libgmp.so.10 > (0x7fa322f24000) > > libstdc++.so.6 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libstdc++.so.6 > (0x7fa322daf000) > > libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x7fa3229fb000) > > libgcc_s.so.1 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libgcc_s.so.1 > (0x7fa3229e7000) > > libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x7fa3225f6000) > > libffpack.so.1 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libffpack.so.1 > (0x7fa3224e3000) > > libgmpxx.so.4 => >
Re: [sage-support] Sage Crash Report
hey, I had similar/same(?) problem as Mike and installing older version of givaro (conda install "givaro=4.1.1=h192cbe9_1") fixed it. -M On Wednesday, March 24, 2021 at 12:55:05 PM UTC-4 isu...@gmail.com wrote: > Mike, > > Can you try creating a new conda environment? This is an issue with the > latest givaro build we had and we marked it as broken. > Details at https://github.com/conda-forge/givaro-feedstock/issues/13 > > (You could also try doing `conda install "givaro=4.1.1=h192cbe9_1"` to get > the older link.) > > Isuru > > On Wed, Mar 24, 2021 at 9:07 AM Mike Lee wrote: > >> Not sure if this is relevant, but I get the following messages when I try >> running 'conda update givaro' in my sage conda environment (attached). I >> apologize for multiple messages! >> >> On Wed, Mar 24, 2021 at 8:42 AM Mike Lee wrote: >> >>> I believe the following line in the output of the nm command you >>> suggested is the corresponding symbol? >>> >>> 00017da0 T Givaro::Integer::operator >>> std::__cxx11::basic_string, >>> std::allocator >() const >>> >>> I've also attached the full output of the nm command as a txt file below >>> in case it's helpful! >>> >>> On Wed, Mar 24, 2021 at 5:41 AM Dima Pasechnik wrote: >>> On Tue, Mar 23, 2021 at 10:27 PM Mike Lee wrote: > > Hi, > > I'm facing a similar issue when I tried to install Sage through conda (I followed the 'Setting Up' directions in https://wiki.sagemath.org/Conda). I get the following error in my Sage_crash_report.txt (attached) > > 'ImportError: /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/ matrix_modn_sparse.cpython-39-x86_64-linux-gnu.so: undefined symbol: _ZNK6Givaro7IntegercvNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEB5cxx11Ev' this is, demangled: $ c++filt _ZNK6Givaro7IntegercvNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEB5cxx11Ev Givaro::Integer::operator std::__cxx11::basic_string>>> std::char_traits, std::allocator >[abi:cxx11]() const Can you find this in the output of $ nm -D --demangle /home/msl/software/miniconda3/envs/sage/lib/libgivaro.so.9 Perhaps, wrong C++ standard version chosen somewhere? Maybe Isuru knows what's wrong there. > > What could I do to fix this issue? Thank you in advance for the help! > > By the way, when I run 'ldd /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/ matrix_modn_sparse.cpython-39-x86_64-linux-gnu.so ' I get the following output: > > linux-vdso.so.1 (0x7ffde17a7000) > liblinbox.so.0 => /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../liblinbox.so.0 (0x7fa325ba) > libfflas.so.1 => /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libfflas.so.1 (0x7fa325ad4000) > libblas.so.3 => /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libblas.so.3 (0x7fa323ae3000) > libgivaro.so.9 => /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libgivaro.so.9 (0x7fa323a88000) > libflint.so.14 => /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libflint.so.14 (0x7fa32320d000) > libntl.so.43 => /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libntl.so.43 (0x7fa322fca000) > libgmp.so.10 => /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libgmp.so.10 (0x7fa322f24000) > libstdc++.so.6 => /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libstdc++.so.6 (0x7fa322daf000) > libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x7fa3229fb000) > libgcc_s.so.1 => /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libgcc_s.so.1 (0x7fa3229e7000) > libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x7fa3225f6000) > libffpack.so.1 => /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libffpack.so.1 (0x7fa3224e3000) > libgmpxx.so.4 => /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libgmpxx.so.4 (0x7fa3224da000) > libmpfr.so.6 => /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libmpfr.so.6 (0x7fa32245b000) > libiml.so.0 =>
Re: [sage-support] Re: direct product and direct sum of groups
On Wed, Mar 24, 2021 at 3:59 PM slelievre wrote: > > 2021-03-24 14:53:06 UTC, Matt: >> >> How can I calculate the direct product of two groups and/or the direct sum? >> For example given: >> >> G.=FreeGroup() >> H=G.quotient([x*y]) >> >> how do I calculate H+H and HxH? > > > Having defined `H`, you can type > > H. > > then hit the TAB key to see what methods are available. > > This reveals the methods `cartesian_product` > and `direct_product`, are they what you need? > > ``` > sage: G. = FreeGroup() > sage: H = G.quotient([x*y]) > > sage: H.cartesian_product(H) > The Cartesian product of > (Finitely presented group < x, y | x*y >, > Finitely presented group < x, y | x*y >) > > sage: H.direct_product(H) > Finitely presented group < a, b, c, d | > a*b, c*d, a^-1*c^-1*a*c, a^-1*d^-1*a*d, > b^-1*c^-1*b*c, b^-1*d^-1*b*d > > ``` careful here, FreeGroup is not Abelian, you'll want to add commuting relations for all its generators. You might prefer AbelianGroup() to begin with. > > -- > You received this message because you are subscribed to the Google Groups > "sage-support" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-support+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sage-support/ec06a1f8-624a-4352-b968-ac451fa3847bn%40googlegroups.com. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/CAAWYfq1Ey5ujUz5ygbXNHuJYpvN_8JGEyxKunJdVTAb2fhr38g%40mail.gmail.com.
Re: [sage-support] Sage Crash Report
Mike, Can you try creating a new conda environment? This is an issue with the latest givaro build we had and we marked it as broken. Details at https://github.com/conda-forge/givaro-feedstock/issues/13 (You could also try doing `conda install "givaro=4.1.1=h192cbe9_1"` to get the older link.) Isuru On Wed, Mar 24, 2021 at 9:07 AM Mike Lee wrote: > Not sure if this is relevant, but I get the following messages when I try > running 'conda update givaro' in my sage conda environment (attached). I > apologize for multiple messages! > > On Wed, Mar 24, 2021 at 8:42 AM Mike Lee wrote: > >> I believe the following line in the output of the nm command you >> suggested is the corresponding symbol? >> >> 00017da0 T Givaro::Integer::operator >> std::__cxx11::basic_string, >> std::allocator >() const >> >> I've also attached the full output of the nm command as a txt file below >> in case it's helpful! >> >> On Wed, Mar 24, 2021 at 5:41 AM Dima Pasechnik wrote: >> >>> On Tue, Mar 23, 2021 at 10:27 PM Mike Lee wrote: >>> > >>> > Hi, >>> > >>> > I'm facing a similar issue when I tried to install Sage through conda >>> (I followed the 'Setting Up' directions in >>> https://wiki.sagemath.org/Conda). I get the following error in my >>> Sage_crash_report.txt (attached) >>> > >>> > 'ImportError: >>> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/ >>> matrix_modn_sparse.cpython-39-x86_64-linux-gnu.so: undefined symbol: >>> _ZNK6Givaro7IntegercvNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEB5cxx11Ev' >>> >>> this is, demangled: >>> >>> $ c++filt >>> _ZNK6Givaro7IntegercvNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEB5cxx11Ev >>> Givaro::Integer::operator std::__cxx11::basic_string>> std::char_traits, std::allocator >[abi:cxx11]() const >>> >>> Can you find this in the output of >>> >>> $ nm -D --demangle >>> /home/msl/software/miniconda3/envs/sage/lib/libgivaro.so.9 >>> >>> Perhaps, wrong C++ standard version chosen somewhere? >>> >>> Maybe Isuru knows what's wrong there. >>> >>> > >>> > What could I do to fix this issue? Thank you in advance for the help! >>> > >>> > By the way, when I run 'ldd >>> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/ >>> matrix_modn_sparse.cpython-39-x86_64-linux-gnu.so ' I get the following >>> output: >>> > >>> > linux-vdso.so.1 (0x7ffde17a7000) >>> > liblinbox.so.0 => >>> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../liblinbox.so.0 >>> (0x7fa325ba) >>> > libfflas.so.1 => >>> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libfflas.so.1 >>> (0x7fa325ad4000) >>> > libblas.so.3 => >>> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libblas.so.3 >>> (0x7fa323ae3000) >>> > libgivaro.so.9 => >>> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libgivaro.so.9 >>> (0x7fa323a88000) >>> > libflint.so.14 => >>> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libflint.so.14 >>> (0x7fa32320d000) >>> > libntl.so.43 => >>> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libntl.so.43 >>> (0x7fa322fca000) >>> > libgmp.so.10 => >>> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libgmp.so.10 >>> (0x7fa322f24000) >>> > libstdc++.so.6 => >>> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libstdc++.so.6 >>> (0x7fa322daf000) >>> > libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x7fa3229fb000) >>> > libgcc_s.so.1 => >>> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libgcc_s.so.1 >>> (0x7fa3229e7000) >>> > libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x7fa3225f6000) >>> > libffpack.so.1 => >>> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libffpack.so.1 >>> (0x7fa3224e3000) >>> > libgmpxx.so.4 => >>> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libgmpxx.so.4 >>> (0x7fa3224da000) >>> > libmpfr.so.6 => >>> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libmpfr.so.6 >>> (0x7fa32245b000) >>> > libiml.so.0 => >>> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libiml.so.0 >>> (0x7fa322436000) >>> > libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 >>> (0x7fa322217000) >>> > libgfortran.so.5 => >>> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libgfortran.so.5 >>> (0x7fa322075000) >>> > /lib64/ld-linux-x86-64.so.2 (0x7fa325aa8000) >>> > libgf2x.so.3 => >>>
[sage-support] Re: direct product and direct sum of groups
2021-03-24 14:53:06 UTC, Matt: > How can I calculate the direct product of two groups and/or the direct sum? > For example given: > > G.=FreeGroup() > H=G.quotient([x*y]) > > how do I calculate H+H and HxH? > Having defined `H`, you can type H. then hit the TAB key to see what methods are available. This reveals the methods `cartesian_product` and `direct_product`, are they what you need? ``` sage: G. = FreeGroup() sage: H = G.quotient([x*y]) sage: H.cartesian_product(H) The Cartesian product of (Finitely presented group < x, y | x*y >, Finitely presented group < x, y | x*y >) sage: H.direct_product(H) Finitely presented group < a, b, c, d | a*b, c*d, a^-1*c^-1*a*c, a^-1*d^-1*a*d, b^-1*c^-1*b*c, b^-1*d^-1*b*d > ``` -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/ec06a1f8-624a-4352-b968-ac451fa3847bn%40googlegroups.com.
[sage-support] direct product and direct sum of groups
How can I calculate the direct product of two groups and/or the direct sum? For example given: G.=FreeGroup() H=G.quotient([x*y]) how do I calculate H+H and HxH? -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/64dcc367-d44c-4681-b0db-1fddeab2ad1dn%40googlegroups.com.
Re: [sage-support] Sage Crash Report
Not sure if this is relevant, but I get the following messages when I try running 'conda update givaro' in my sage conda environment (attached). I apologize for multiple messages! On Wed, Mar 24, 2021 at 8:42 AM Mike Lee wrote: > I believe the following line in the output of the nm command you > suggested is the corresponding symbol? > > 00017da0 T Givaro::Integer::operator > std::__cxx11::basic_string, > std::allocator >() const > > I've also attached the full output of the nm command as a txt file below > in case it's helpful! > > On Wed, Mar 24, 2021 at 5:41 AM Dima Pasechnik wrote: > >> On Tue, Mar 23, 2021 at 10:27 PM Mike Lee wrote: >> > >> > Hi, >> > >> > I'm facing a similar issue when I tried to install Sage through conda >> (I followed the 'Setting Up' directions in >> https://wiki.sagemath.org/Conda). I get the following error in my >> Sage_crash_report.txt (attached) >> > >> > 'ImportError: >> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/ >> matrix_modn_sparse.cpython-39-x86_64-linux-gnu.so: undefined symbol: >> _ZNK6Givaro7IntegercvNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEB5cxx11Ev' >> >> this is, demangled: >> >> $ c++filt >> _ZNK6Givaro7IntegercvNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEB5cxx11Ev >> Givaro::Integer::operator std::__cxx11::basic_string> std::char_traits, std::allocator >[abi:cxx11]() const >> >> Can you find this in the output of >> >> $ nm -D --demangle >> /home/msl/software/miniconda3/envs/sage/lib/libgivaro.so.9 >> >> Perhaps, wrong C++ standard version chosen somewhere? >> >> Maybe Isuru knows what's wrong there. >> >> > >> > What could I do to fix this issue? Thank you in advance for the help! >> > >> > By the way, when I run 'ldd >> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/ >> matrix_modn_sparse.cpython-39-x86_64-linux-gnu.so ' I get the following >> output: >> > >> > linux-vdso.so.1 (0x7ffde17a7000) >> > liblinbox.so.0 => >> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../liblinbox.so.0 >> (0x7fa325ba) >> > libfflas.so.1 => >> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libfflas.so.1 >> (0x7fa325ad4000) >> > libblas.so.3 => >> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libblas.so.3 >> (0x7fa323ae3000) >> > libgivaro.so.9 => >> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libgivaro.so.9 >> (0x7fa323a88000) >> > libflint.so.14 => >> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libflint.so.14 >> (0x7fa32320d000) >> > libntl.so.43 => >> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libntl.so.43 >> (0x7fa322fca000) >> > libgmp.so.10 => >> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libgmp.so.10 >> (0x7fa322f24000) >> > libstdc++.so.6 => >> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libstdc++.so.6 >> (0x7fa322daf000) >> > libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x7fa3229fb000) >> > libgcc_s.so.1 => >> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libgcc_s.so.1 >> (0x7fa3229e7000) >> > libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x7fa3225f6000) >> > libffpack.so.1 => >> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libffpack.so.1 >> (0x7fa3224e3000) >> > libgmpxx.so.4 => >> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libgmpxx.so.4 >> (0x7fa3224da000) >> > libmpfr.so.6 => >> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libmpfr.so.6 >> (0x7fa32245b000) >> > libiml.so.0 => >> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libiml.so.0 >> (0x7fa322436000) >> > libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 >> (0x7fa322217000) >> > libgfortran.so.5 => >> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libgfortran.so.5 >> (0x7fa322075000) >> > /lib64/ld-linux-x86-64.so.2 (0x7fa325aa8000) >> > libgf2x.so.3 => >> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libgf2x.so.3 >> (0x7fa322062000) >> > libquadmath.so.0 => >> /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libquadmath.so.0 >> (0x7fa322028000) >> > >> > Mike >> > >> > On Sunday, January 24, 2021 at 1:16:24 PM UTC-5 dim...@gmail.com wrote: >> >> >> >> at the bottom of the log you see >> >> >> >> ImportError: >>
Re: [sage-support] Sage Crash Report
I believe the following line in the output of the nm command you suggested is the corresponding symbol? 00017da0 T Givaro::Integer::operator std::__cxx11::basic_string, std::allocator >() const I've also attached the full output of the nm command as a txt file below in case it's helpful! On Wed, Mar 24, 2021 at 5:41 AM Dima Pasechnik wrote: > On Tue, Mar 23, 2021 at 10:27 PM Mike Lee wrote: > > > > Hi, > > > > I'm facing a similar issue when I tried to install Sage through conda (I > followed the 'Setting Up' directions in https://wiki.sagemath.org/Conda). > I get the following error in my Sage_crash_report.txt (attached) > > > > 'ImportError: > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/ > matrix_modn_sparse.cpython-39-x86_64-linux-gnu.so: undefined symbol: > _ZNK6Givaro7IntegercvNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEB5cxx11Ev' > > this is, demangled: > > $ c++filt > _ZNK6Givaro7IntegercvNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEB5cxx11Ev > Givaro::Integer::operator std::__cxx11::basic_string std::char_traits, std::allocator >[abi:cxx11]() const > > Can you find this in the output of > > $ nm -D --demangle > /home/msl/software/miniconda3/envs/sage/lib/libgivaro.so.9 > > Perhaps, wrong C++ standard version chosen somewhere? > > Maybe Isuru knows what's wrong there. > > > > > What could I do to fix this issue? Thank you in advance for the help! > > > > By the way, when I run 'ldd > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/ > matrix_modn_sparse.cpython-39-x86_64-linux-gnu.so ' I get the following > output: > > > > linux-vdso.so.1 (0x7ffde17a7000) > > liblinbox.so.0 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../liblinbox.so.0 > (0x7fa325ba) > > libfflas.so.1 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libfflas.so.1 > (0x7fa325ad4000) > > libblas.so.3 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libblas.so.3 > (0x7fa323ae3000) > > libgivaro.so.9 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libgivaro.so.9 > (0x7fa323a88000) > > libflint.so.14 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libflint.so.14 > (0x7fa32320d000) > > libntl.so.43 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libntl.so.43 > (0x7fa322fca000) > > libgmp.so.10 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libgmp.so.10 > (0x7fa322f24000) > > libstdc++.so.6 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libstdc++.so.6 > (0x7fa322daf000) > > libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x7fa3229fb000) > > libgcc_s.so.1 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libgcc_s.so.1 > (0x7fa3229e7000) > > libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x7fa3225f6000) > > libffpack.so.1 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libffpack.so.1 > (0x7fa3224e3000) > > libgmpxx.so.4 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libgmpxx.so.4 > (0x7fa3224da000) > > libmpfr.so.6 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libmpfr.so.6 > (0x7fa32245b000) > > libiml.so.0 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libiml.so.0 > (0x7fa322436000) > > libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 > (0x7fa322217000) > > libgfortran.so.5 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libgfortran.so.5 > (0x7fa322075000) > > /lib64/ld-linux-x86-64.so.2 (0x7fa325aa8000) > > libgf2x.so.3 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libgf2x.so.3 > (0x7fa322062000) > > libquadmath.so.0 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libquadmath.so.0 > (0x7fa322028000) > > > > Mike > > > > On Sunday, January 24, 2021 at 1:16:24 PM UTC-5 dim...@gmail.com wrote: > >> > >> at the bottom of the log you see > >> > >> ImportError: > /home/mathieu/opt/SageMath/local/lib/python3.8/site-packages/sage/matrix/ > matrix_modn_sparse.cpython-38-x86_64-linux-gnu.so: > >> undefined symbol: > >> > _ZNK6Givaro7IntegercvNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEB5cxx11Ev > >> > >> > >> which is an indication that something went wrong with linking givaro. > >> E.g. you might be linking to a system-wide > >> installed givaro, but it's expected to
Re: [sage-support] http://aleph.sagemath.org/
Minor point: it was very aggressive cryptocurrency miners, not spammers...
On Wed, Mar 24, 2021 at 3:45 AM Dima Pasechnik wrote:
> On Wed, Mar 24, 2021 at 10:28 AM 'Martin R. Albrecht' via sage-support
> wrote:
> >
> > Hi there,
> >
> > The trusted Sage Cell server stopped loading external resources, e.g. for
> >
> > load("https://bitbucket.org/malb/lwe-estimator/raw/HEAD/estimator.py;)
> > n, alpha, q = 256, 0.0009765625, 65537
> > set_verbose(1)
> > _ = estimate_lwe(n, alpha, q)
> >
> >
> http://aleph.sagemath.org/?z=eJxNjcEKwjAQBe-F_kPoqYXYjZWkKHgQFPyLkOhii6mJyWrx782hiO84MPOcN9e6GohC2gHYkezrckdqfbzBZJwFN-MKE42TIR8hmhnOp8MRfqgNn6opiwdnxoXBcPZke9ZJxZlohRDbXknVSbGMMyXlpi-LhKTfGK1PWK-zr7O1NFHnz_ov2HwBPwsyhw===sage
> >
> > I’m getting
> >
> > gaierror: [Errno -3] Temporary failure in name resolution
> >
> > During handling of the above exception, another exception occurred:
> >
> > Is that a bug or by design (i.e. tightened security)?
> >
> by design. They were hit by spammers and had to disable this.
> See https://groups.google.com/g/sage-cell/c/ETeONQMYbQM
>
>
> > Cheers,
> > Martin
> > --
> >
> > _pgp: https://keybase.io/martinralbrecht
> > _www: https://malb.io
> >
> > --
> > You received this message because you are subscribed to the Google
> Groups "sage-support" group.
> > To unsubscribe from this group and stop receiving emails from it, send
> an email to sage-support+unsubscr...@googlegroups.com.
> > To view this discussion on the web visit
> https://groups.google.com/d/msgid/sage-support/87k0pwc0cs.fsf%40googlemail.com
> .
>
> --
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> .
>
--
-- William Stein
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[sage-support] Re: Is load() suddenly not working for loading files from repositories?
Thanks a lot, I hadn't seen that discussion. It is a shame, but it seems that github repositories are planned to be allowed, which would work fine for my purposes. Best regards, Carlos El martes, 23 de marzo de 2021 a las 22:33:46 UTC-3, slelievre escribió: > Sadly network access from SageCell had to be removed following abuse. > > See the discussion on the sage-cell mailing list: > > https://groups.google.com/g/sage-cell/c/ETeONQMYbQM > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/52d7e747-fa4b-426b-8a79-a2510ac98b33n%40googlegroups.com.
[sage-support] Help requests for SageMath on Windows
Two recent help requests for SageMath on Windows: - It seems that the kernel has crashed https://ask.sagemath.org/question/56353 - How to load .sobj files into Jupyter Notebook https://ask.sagemath.org/question/56331 See also https://ask.sagemath.org/questions/scope:all/sort:activity-desc/tags:windows/ https://ask.sagemath.org/questions/scope:all/sort:activity-desc/tags:windows7/ https://ask.sagemath.org/questions/scope:all/sort:activity-desc/tags:windows10/ https://ask.sagemath.org/questions/scope:all/sort:activity-desc/tags:sage-windows/ -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/6fb6b2dd-f693-453d-8ad6-ce49d5b458bfn%40googlegroups.com.
Re: [sage-support] http://aleph.sagemath.org/
On Wed, Mar 24, 2021 at 10:28 AM 'Martin R. Albrecht' via sage-support
wrote:
>
> Hi there,
>
> The trusted Sage Cell server stopped loading external resources, e.g. for
>
> load("https://bitbucket.org/malb/lwe-estimator/raw/HEAD/estimator.py;)
> n, alpha, q = 256, 0.0009765625, 65537
> set_verbose(1)
> _ = estimate_lwe(n, alpha, q)
>
> http://aleph.sagemath.org/?z=eJxNjcEKwjAQBe-F_kPoqYXYjZWkKHgQFPyLkOhii6mJyWrx782hiO84MPOcN9e6GohC2gHYkezrckdqfbzBZJwFN-MKE42TIR8hmhnOp8MRfqgNn6opiwdnxoXBcPZke9ZJxZlohRDbXknVSbGMMyXlpi-LhKTfGK1PWK-zr7O1NFHnz_ov2HwBPwsyhw===sage
>
> I’m getting
>
> gaierror: [Errno -3] Temporary failure in name resolution
>
> During handling of the above exception, another exception occurred:
>
> Is that a bug or by design (i.e. tightened security)?
>
by design. They were hit by spammers and had to disable this.
See https://groups.google.com/g/sage-cell/c/ETeONQMYbQM
> Cheers,
> Martin
> --
>
> _pgp: https://keybase.io/martinralbrecht
> _www: https://malb.io
>
> --
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> "sage-support" group.
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> email to sage-support+unsubscr...@googlegroups.com.
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[sage-support] http://aleph.sagemath.org/
Hi there,
The trusted Sage Cell server stopped loading external resources, e.g. for
load("https://bitbucket.org/malb/lwe-estimator/raw/HEAD/estimator.py;)
n, alpha, q = 256, 0.0009765625, 65537
set_verbose(1)
_ = estimate_lwe(n, alpha, q)
http://aleph.sagemath.org/?z=eJxNjcEKwjAQBe-F_kPoqYXYjZWkKHgQFPyLkOhii6mJyWrx782hiO84MPOcN9e6GohC2gHYkezrckdqfbzBZJwFN-MKE42TIR8hmhnOp8MRfqgNn6opiwdnxoXBcPZke9ZJxZlohRDbXknVSbGMMyXlpi-LhKTfGK1PWK-zr7O1NFHnz_ov2HwBPwsyhw===sage
I’m getting
gaierror: [Errno -3] Temporary failure in name resolution
During handling of the above exception, another exception occurred:
Is that a bug or by design (i.e. tightened security)?
Cheers,
Martin
--
_pgp: https://keybase.io/martinralbrecht
_www: https://malb.io
--
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Re: [sage-support] Sage Crash Report
On Tue, Mar 23, 2021 at 10:27 PM Mike Lee wrote: > > Hi, > > I'm facing a similar issue when I tried to install Sage through conda (I > followed the 'Setting Up' directions in https://wiki.sagemath.org/Conda). I > get the following error in my Sage_crash_report.txt (attached) > > 'ImportError: > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/matrix_modn_sparse.cpython-39-x86_64-linux-gnu.so: > undefined symbol: > _ZNK6Givaro7IntegercvNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEB5cxx11Ev' this is, demangled: $ c++filt _ZNK6Givaro7IntegercvNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEB5cxx11Ev Givaro::Integer::operator std::__cxx11::basic_string, std::allocator >[abi:cxx11]() const Can you find this in the output of $ nm -D --demangle /home/msl/software/miniconda3/envs/sage/lib/libgivaro.so.9 Perhaps, wrong C++ standard version chosen somewhere? Maybe Isuru knows what's wrong there. > > What could I do to fix this issue? Thank you in advance for the help! > > By the way, when I run 'ldd > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/matrix_modn_sparse.cpython-39-x86_64-linux-gnu.so > ' I get the following output: > > linux-vdso.so.1 (0x7ffde17a7000) > liblinbox.so.0 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../liblinbox.so.0 > (0x7fa325ba) > libfflas.so.1 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libfflas.so.1 > (0x7fa325ad4000) > libblas.so.3 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libblas.so.3 > (0x7fa323ae3000) > libgivaro.so.9 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libgivaro.so.9 > (0x7fa323a88000) > libflint.so.14 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libflint.so.14 > (0x7fa32320d000) > libntl.so.43 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libntl.so.43 > (0x7fa322fca000) > libgmp.so.10 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libgmp.so.10 > (0x7fa322f24000) > libstdc++.so.6 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libstdc++.so.6 > (0x7fa322daf000) > libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x7fa3229fb000) > libgcc_s.so.1 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../../libgcc_s.so.1 > (0x7fa3229e7000) > libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x7fa3225f6000) > libffpack.so.1 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libffpack.so.1 > (0x7fa3224e3000) > libgmpxx.so.4 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libgmpxx.so.4 > (0x7fa3224da000) > libmpfr.so.6 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libmpfr.so.6 > (0x7fa32245b000) > libiml.so.0 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libiml.so.0 > (0x7fa322436000) > libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fa322217000) > libgfortran.so.5 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libgfortran.so.5 > (0x7fa322075000) > /lib64/ld-linux-x86-64.so.2 (0x7fa325aa8000) > libgf2x.so.3 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libgf2x.so.3 > (0x7fa322062000) > libquadmath.so.0 => > /home/msl/software/miniconda3/envs/sage/lib/python3.9/site-packages/sage/matrix/../../../.././libquadmath.so.0 > (0x7fa322028000) > > Mike > > On Sunday, January 24, 2021 at 1:16:24 PM UTC-5 dim...@gmail.com wrote: >> >> at the bottom of the log you see >> >> ImportError: >> /home/mathieu/opt/SageMath/local/lib/python3.8/site-packages/sage/matrix/matrix_modn_sparse.cpython-38-x86_64-linux-gnu.so: >> undefined symbol: >> _ZNK6Givaro7IntegercvNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEB5cxx11Ev >> >> >> which is an indication that something went wrong with linking givaro. >> E.g. you might be linking to a system-wide >> installed givaro, but it's expected to be the one built by Sage - >> whether the latter is the case can be found out in the top-level >> config.log. >> >> What is the output of >> >> ldd >> /home/mathieu/opt/SageMath/local/lib/python3.8/site-packages/sage/matrix/matrix_modn_sparse.cpython-38-x86_64-linux-gnu.so >> >> ? >> >> >> On Sun, Jan 24, 2021 at 4:22 PM Mathieu Dutour wrote: >> > >> > >> > -- >> > You received this message because you are subscribed to the Google Groups >> >
Re: [sage-support] Find group from matrix presentation
On Wed, Mar 24, 2021 at 9:11 AM nqn...@gmail.com wrote: > > El miércoles, 24 de marzo de 2021 a las 10:01:43 UTC+1, matt...@gmail.com > escribió: >> >> I think the author uses "present" to say "generate" >>> >>> > > I suppose you mean the finitely generated Z-module (abelian group) presented > by the matrix, ie. its cokernel. In that case, you can do: > > sage: A=matrix([[1,-3],[-3,4]]) > sage: ZZ^2/A.column_space() > Finitely generated module V/W over Integer Ring with invariants (5) Or just sage: A.smith_form() ( [1 0] [ 0 1] [-3 -4] [0 5], [ 1 -3], [-2 -3] ) here the 1st entry is the Smith Normal Form of A, and the 2nd and 3rd ones are what one uses to conjugate A to get it. (Yes, in English "present a group" means generators and relations, as opposed to "represent", which means a linear representation. Non-native Englsh speakers sometimes flip the meaning of these, e.g. in Russian the "представление" means "represenation", and ''копредставление'' means "presentation'') > > > > -- > You received this message because you are subscribed to the Google Groups > "sage-support" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-support+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sage-support/47dcb142-e6af-49e6-81bc-ad8093d00362n%40googlegroups.com. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/CAAWYfq00zM0eQD%2B%2BUxRQ2oMRJEGGyEiO3cFKEVjkdF4gnXhhMg%40mail.gmail.com.
Re: [sage-support] Find group from matrix presentation
El miércoles, 24 de marzo de 2021 a las 10:01:43 UTC+1, matt...@gmail.com escribió: > I think the author uses "present" to say "generate" > >> >> I suppose you mean the finitely generated Z-module (abelian group) presented by the matrix, ie. its cokernel. In that case, you can do: sage: A=matrix([[1,-3],[-3,4]]) sage: ZZ^2/A.column_space() Finitely generated module V/W over Integer Ring with invariants (5) -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/47dcb142-e6af-49e6-81bc-ad8093d00362n%40googlegroups.com.
Re: [sage-support] Find group from matrix presentation
I think the author uses "present" to say "generate" Il giorno mercoledì 24 marzo 2021 alle 09:35:05 UTC+1 vdelecroix ha scritto: > What does it mean "it presents Z5"? > > Le 24/03/2021 à 09:28, Mattia Villani a écrit : > > That matrix comes from the paper by J.Hempel: "Homology of covering" Pac. > > J. Math. vol 112 (1984) 83, example 5.2. > > The author says that it presents Z5 > > > > Il giorno mercoledì 24 marzo 2021 alle 08:50:18 UTC+1 vdelecroix ha > scritto: > > > >> Your matrix has determinant 4 - 9 = -5. Hence, the group it generates > >> in GL(2,QQ) is necessarily infinite. > >> > >> Le 24/03/2021 à 08:47, Mattia Villani a écrit : > >>> I do not have real code, only a matrix: > >>> > >>> matrix([[1,-3],[-3,4]]) > >>> > >>> which should be a representation of the group Z5: I want to verify it > >> with > >>> Sage > >>> > >>> Il giorno martedì 23 marzo 2021 alle 17:18:12 UTC+1 dim...@gmail.com > ha > >>> scritto: > >>> > On Tue, Mar 23, 2021 at 2:00 PM Mattia Villani > >> wrote: > > > > Is is possible to find the group given the matrix presentation? > > Please be more specific. Post some Sage commands you're trying. > > > > > -- > > You received this message because you are subscribed to the Google > Groups "sage-support" group. > > To unsubscribe from this group and stop receiving emails from it, > send > an email to sage-support...@googlegroups.com. > > To view this discussion on the web visit > > >> > https://groups.google.com/d/msgid/sage-support/348e69d5-b3a5-45c4-a7ec-baed9213f6dcn%40googlegroups.com > . > > >>> > >> > > > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/38ad34e7-d9bc-4541-8729-fd665a9ee0b4n%40googlegroups.com.
Re: [sage-support] Find group from matrix presentation
What does it mean "it presents Z5"? Le 24/03/2021 à 09:28, Mattia Villani a écrit : That matrix comes from the paper by J.Hempel: "Homology of covering" Pac. J. Math. vol 112 (1984) 83, example 5.2. The author says that it presents Z5 Il giorno mercoledì 24 marzo 2021 alle 08:50:18 UTC+1 vdelecroix ha scritto: Your matrix has determinant 4 - 9 = -5. Hence, the group it generates in GL(2,QQ) is necessarily infinite. Le 24/03/2021 à 08:47, Mattia Villani a écrit : I do not have real code, only a matrix: matrix([[1,-3],[-3,4]]) which should be a representation of the group Z5: I want to verify it with Sage Il giorno martedì 23 marzo 2021 alle 17:18:12 UTC+1 dim...@gmail.com ha scritto: On Tue, Mar 23, 2021 at 2:00 PM Mattia Villani wrote: Is is possible to find the group given the matrix presentation? Please be more specific. Post some Sage commands you're trying. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/348e69d5-b3a5-45c4-a7ec-baed9213f6dcn%40googlegroups.com . -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/0727a2a9-0510-d164-00c6-450b641be317%40gmail.com.
Re: [sage-support] Find group from matrix presentation
That matrix comes from the paper by J.Hempel: "Homology of covering" Pac. J. Math. vol 112 (1984) 83, example 5.2. The author says that it presents Z5 Il giorno mercoledì 24 marzo 2021 alle 08:50:18 UTC+1 vdelecroix ha scritto: > Your matrix has determinant 4 - 9 = -5. Hence, the group it generates > in GL(2,QQ) is necessarily infinite. > > Le 24/03/2021 à 08:47, Mattia Villani a écrit : > > I do not have real code, only a matrix: > > > > matrix([[1,-3],[-3,4]]) > > > > which should be a representation of the group Z5: I want to verify it > with > > Sage > > > > Il giorno martedì 23 marzo 2021 alle 17:18:12 UTC+1 dim...@gmail.com ha > > scritto: > > > >> On Tue, Mar 23, 2021 at 2:00 PM Mattia Villani > wrote: > >>> > >>> Is is possible to find the group given the matrix presentation? > >> > >> Please be more specific. Post some Sage commands you're trying. > >> > >>> > >>> -- > >>> You received this message because you are subscribed to the Google > >> Groups "sage-support" group. > >>> To unsubscribe from this group and stop receiving emails from it, send > >> an email to sage-support...@googlegroups.com. > >>> To view this discussion on the web visit > >> > https://groups.google.com/d/msgid/sage-support/348e69d5-b3a5-45c4-a7ec-baed9213f6dcn%40googlegroups.com > >> . > >> > > > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/9f462156-fa0d-496c-a97a-0fb926d51d6bn%40googlegroups.com.
Re: [sage-support] Find group from matrix presentation
Your matrix has determinant 4 - 9 = -5. Hence, the group it generates in GL(2,QQ) is necessarily infinite. Le 24/03/2021 à 08:47, Mattia Villani a écrit : I do not have real code, only a matrix: matrix([[1,-3],[-3,4]]) which should be a representation of the group Z5: I want to verify it with Sage Il giorno martedì 23 marzo 2021 alle 17:18:12 UTC+1 dim...@gmail.com ha scritto: On Tue, Mar 23, 2021 at 2:00 PM Mattia Villani wrote: Is is possible to find the group given the matrix presentation? Please be more specific. Post some Sage commands you're trying. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/348e69d5-b3a5-45c4-a7ec-baed9213f6dcn%40googlegroups.com . -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/882bc439-007c-3900-6fe1-9e7feeba9ecf%40gmail.com.
Re: [sage-support] Find group from matrix presentation
I do not have real code, only a matrix: matrix([[1,-3],[-3,4]]) which should be a representation of the group Z5: I want to verify it with Sage Il giorno martedì 23 marzo 2021 alle 17:18:12 UTC+1 dim...@gmail.com ha scritto: > On Tue, Mar 23, 2021 at 2:00 PM Mattia Villani wrote: > > > > Is is possible to find the group given the matrix presentation? > > Please be more specific. Post some Sage commands you're trying. > > > > > -- > > You received this message because you are subscribed to the Google > Groups "sage-support" group. > > To unsubscribe from this group and stop receiving emails from it, send > an email to sage-support...@googlegroups.com. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/sage-support/348e69d5-b3a5-45c4-a7ec-baed9213f6dcn%40googlegroups.com > . > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/7ca3fa5d-c8a3-43f7-99a9-092664ef0429n%40googlegroups.com.
