Re: [sage-support] Compile Sage 8.9 on Opensuse Tumbleweed:Error building gfortran-7.4.0
Hi, You are correct that in my config.log, there is message saying "gcc- ... will not be installed" : matmsh@euler:~/installed/sages/sage-8.9> grep gcc config.log | grep install configure:7665: === checking whether to install the gcc SPKG === configure:19813: result: gcc-7.4.0 will not be installed (configure check) matmsh@euler:~/installed/sages/sage-8.9> I have done a rebuilt: > make distclean && ./configure > make After the rebuilt, the config.log still contains matmsh@euler:~/installed/sages/sage-8.9> grep gfortran config.log | grep install configure:13595: === checking whether to install the gfortran SPKG === configure:19813: result: gfortran-7.4.0 will not be installed (configure check) matmsh@euler:~/installed/sages/sage-8.9> grep gcc config.log | grep install configure:7665: === checking whether to install the gcc SPKG === configure:19813: result: gcc-7.4.0 will not be installed (configure check) Below are intalled Fortran related rpm packages. matmsh@euler:~/installed/sages/sage-8.9> rpm -qa | grep fortran libgfortran4-7.5.0+r278197-1.1.x86_64 gcc9-fortran-32bit-9.2.1+r275327-1.3.x86_64 libgfortran5-9.2.1+r275327-1.3.x86_64 gcc-fortran-32bit-9-1.6.x86_64 libgfortran5-32bit-9.2.1+r275327-1.3.x86_64 gcc9-fortran-9.2.1+r275327-1.3.x86_64 gcc-fortran-9-1.6.x86_64 matmsh@euler:~/installed/sages/sage-8.9> As Sage is working on my PC, I will leave it as it. Thanks for your comments ! Shing On Wednesday, December 25, 2019 at 5:25:03 PM UTC, Dima Pasechnik wrote: > > On Wed, Dec 25, 2019 at 10:13 PM 'Shing Hing Man' via sage-support > > wrote: > > > > > > Hi, > > Below is a grep near a "neighbourbood" gfortran in my config.log. > > > Thanks. So one sees > > configure:19813: result: gfortran-7.4.0 will not be installed > (configure check) > > which means that Sage will not attempt to build its own gfortran. > I presume you also see > > ... result: gcc-... will not be installed (configure check) > > Are you saying that despite this, an attempt is made to do so? > The only case this could happen is, I think, that you started a build > without gfortran installed, then > installed it, didn't > > make distclean && ./configure > > Dima > > > > > > matmsh@euler:~/installed/sage/logs/pkgs> grep -A 2 -B 2 gfortran > config.log > > configure:5920: checking dependency style of g++ > > configure:6031: result: none > > configure:6099: checking for gfortran > > configure:6115: found /usr/bin/gfortran > > configure:6126: result: gfortran > > configure:6152: checking for Fortran compiler version > > configure:6161: gfortran --version >&5 > > GNU Fortran (SUSE Linux) 9.2.1 20190903 [gcc-9-branch revision 275330] > > Copyright (C) 2019 Free Software Foundation, Inc. > > -- > > > > configure:6172: $? = 0 > > configure:6161: gfortran -v >&5 > > Using built-in specs. > > COLLECT_GCC=gfortran > > COLLECT_LTO_WRAPPER=/usr/lib64/gcc/x86_64-suse-linux/9/lto-wrapper > > OFFLOAD_TARGET_NAMES=hsa:nvptx-none > > -- > > gcc version 9.2.1 20190903 [gcc-9-branch revision 275330] (SUSE Linux) > > configure:6172: $? = 0 > > configure:6161: gfortran -V >&5 > > gfortran: error: unrecognized command line option '-V' > > gfortran: fatal error: no input files > > compilation terminated. > > configure:6172: $? = 1 > > configure:6161: gfortran -qversion >&5 > > gfortran: error: unrecognized command line option '-qversion'; did you > mean '--version'? > > gfortran: fatal error: no input files > > compilation terminated. > > configure:6172: $? = 1 > > configure:6181: checking whether we are using the GNU Fortran compiler > > configure:6194: gfortran -c conftest.F >&5 > > configure:6194: $? = 0 > > configure:6203: result: yes > > configure:6209: checking whether gfortran accepts -g > > configure:6220: gfortran -c -g conftest.f >&5 > > configure:6220: $? = 0 > > configure:6228: result: yes > > -- > > configure:13454: result: no > > configure:13538: checking for Fortran flag needed to accept free-form > source > > configure:13557: gfortran -c -g -O2 conftest.f >&5 > > conftest.f:2:3: > > > > -- > > | 'world.' > > |end > > configure:13557: gfortran -c -g -O2 -ffree-form conftest.f >&5 > > configure:13557: $? = 0 > > configure:13566: result: -ffree-form > > configure:13595: === checking whether
Re: [sage-support] Compile Sage 8.9 on Opensuse Tumbleweed:Error building gfortran-7.4.0
Hi, Below is a grep near a "neighbourbood" gfortran in my config.log. matmsh@euler:~/installed/sage/logs/pkgs> grep -A 2 -B 2 gfortran config.log configure:5920: checking dependency style of g++ configure:6031: result: none configure:6099: checking for gfortran configure:6115: found /usr/bin/gfortran configure:6126: result: gfortran configure:6152: checking for Fortran compiler version configure:6161: gfortran --version >&5 GNU Fortran (SUSE Linux) 9.2.1 20190903 [gcc-9-branch revision 275330] Copyright (C) 2019 Free Software Foundation, Inc. -- configure:6172: $? = 0 configure:6161: gfortran -v >&5 Using built-in specs. COLLECT_GCC=gfortran COLLECT_LTO_WRAPPER=/usr/lib64/gcc/x86_64-suse-linux/9/lto-wrapper OFFLOAD_TARGET_NAMES=hsa:nvptx-none -- gcc version 9.2.1 20190903 [gcc-9-branch revision 275330] (SUSE Linux) configure:6172: $? = 0 configure:6161: gfortran -V >&5 gfortran: error: unrecognized command line option '-V' gfortran: fatal error: no input files compilation terminated. configure:6172: $? = 1 configure:6161: gfortran -qversion >&5 gfortran: error: unrecognized command line option '-qversion'; did you mean '--version'? gfortran: fatal error: no input files compilation terminated. configure:6172: $? = 1 configure:6181: checking whether we are using the GNU Fortran compiler configure:6194: gfortran -c conftest.F >&5 configure:6194: $? = 0 configure:6203: result: yes configure:6209: checking whether gfortran accepts -g configure:6220: gfortran -c -g conftest.f >&5 configure:6220: $? = 0 configure:6228: result: yes -- configure:13454: result: no configure:13538: checking for Fortran flag needed to accept free-form source configure:13557: gfortran -c -g -O2 conftest.f >&5 conftest.f:2:3: -- | 'world.' |end configure:13557: gfortran -c -g -O2 -ffree-form conftest.f >&5 configure:13557: $? = 0 configure:13566: result: -ffree-form configure:13595: === checking whether to install the gfortran SPKG === configure:13682: === checking whether to install the git SPKG === configure:13726: checking for git -- configure:19809: result: gf2x-1.2.p0 configure:19809: result: gfan-0.6.2.p1 configure:19813: result: gfortran-7.4.0 will not be installed (configure check) configure:19809: result: giac-1.5.0.63.p0 configure:19809: result: giacpy_sage-0.6.7 -- ac_cv_prog_ac_ct_CC=gcc ac_cv_prog_ac_ct_CXX=g++ ac_cv_prog_ac_ct_FC=gfortran ac_cv_prog_ac_ct_OBJC=gcc ac_cv_prog_ac_ct_OBJCXX=g++ -- gfan \ gfan \ gfortran \ gfortran \ giac \ giac \ -- EGREP='/usr/bin/grep -E' EXEEXT='' FC='gfortran' FCFLAGS='-g -O2 -ffree-form' FREETYPE_CFLAGS='' -- ac_ct_CC='gcc' ac_ct_CXX='g++' ac_ct_FC='gfortran' ac_ct_OBJC='gcc' ac_ct_OBJCXX='g++' -- deps_appnope = $(PYTHON) | pip deps_arb = $(MP_LIBRARY) mpfr flint deps_atlas = gfortran | $(PYTHON) deps_autotools = ncurses git xz deps_awali = $(PYTHON) cmake cython nbconvert ncurses -- deps_gf2x = deps_gfan = $(MP_LIBRARY) cddlib deps_gfortran = | $(MP_LIBRARY) mpfr mpc zlib xz deps_giac = readline libpng $(MP_LIBRARY) mpfr mpfi ntl gsl pari deps_giacpy_sage = $(PYTHON) cython giac cysignals | $(SAGERUNTIME) pip sympy maxima -- deps_notedown = $(PYTHON) setuptools | pip nbformat nbconvert six pandoc_attributes deps_ntl = $(MP_LIBRARY) gf2x deps_numpy = $(PYTHON) $(BLAS) gfortran | setuptools pip pkgconfig cython deps_openblas = gfortran | $(PYTHON) deps_openssl = deps_ore_algebra = $(PYTHON) | setuptools pip -- deps_qepcad = readline saclib deps_qhull = | cmake deps_r = $(BLAS) gfortran iconv readline bzip2 xz pcre curl | pkgconf deps_r_jupyter = | $(STANDARD_PACKAGES) deps_ratpoints = $(MP_LIBRARY) -- deps_scandir = $(PYTHON) | setuptools pip six deps_scipoptsuite = $(MP_LIBRARY) bliss readline | cmake deps_scipy = $(PYTHON) $(BLAS) gfortran numpy | pip deps_scons = $(PYTHON) deps_send2trash = $(PYTHON) | pip -- vers_gf2x = 1.2.p0 vers_gfan = 0.6.2.p1 vers_gfortran = 7.4.0 vers_giac = 1.5.0.63.p0 vers_giacpy_sage = 0.6.7 matmsh@euler:~/installed/sage/logs/pkgs> Shing On Saturday, December 21, 2019 at 1:59:12 PM UTC, Dima Pasechnik wrote: > > On Sat, Dec 21, 2019 at 7:59 PM 'Shing Hing Man' via sage-support > > wrote: > > > > My CPU is AMD Ryzen 2700X, so it is 64bit. > > > > I already have gcc-fortran-9-1.6.x86_64 > > installed when I did the build earlier. > > > > After I install gcc-fortran-32bit-9-1.6.x86_64, and then do a make (on > a new sage-8.9 folder) , the error on gfortran disappeared and sage has > built. > > but why do you need a 32-bit gfortran? Is something getting misconfigured? > > Could you post the output of Sage's config.log if you use the "normal" > gfor
Re: [sage-support] Compile Sage 8.9 on Opensuse Tumbleweed:Error building gfortran-7.4.0
My CPU is AMD Ryzen 2700X, so it is 64bit. I already have gcc-fortran-9-1.6.x86_64 installed when I did the build earlier. After I install gcc-fortran-32bit-9-1.6.x86_64, and then do a make (on a new sage-8.9 folder) , the error on gfortran disappeared and sage has built. Thank you for your assistance ! Shing On Saturday, December 21, 2019 at 10:28:44 AM UTC, Dima Pasechnik wrote: > > Do you have a 32-bit system? > > Anyway, if you could install system's gfortran package it would be a way > out of this. > It seems your system should have gfortran version 7, the package is > called gcc-fortran. > > HTH > Dmitrii > > On Sat, 21 Dec 2019, 17:12 'Shing Hing Man' via sage-support, < > sage-s...@googlegroups.com > wrote: > >> Hi, >> When I compile Sage 8.9 on Opensuse Tumbleweed, there is a problem >> building gfortran-7.4.0 : >> static library. */"; echo "GROUP ( libgcc_s.so.1 -lgcc )" ) > >> ./libgcc_s.so >> /usr/bin/ld: skipping incompatible /usr/lib/../lib/libc.so when searching >> for -lc >> /usr/bin/ld: i386 architecture of input file `/usr/lib/../lib/crti.o' is >> incompatible with i386:x86-64 output >> /usr/bin/ld: i386 architecture of input file `/usr/lib/../lib/crtn.o' is >> incompatible with i386:x86-64 output >> collect2: error: ld returned 1 exit status >> make[6]: *** [Makefile:982: libgcc_s.so] Error 1 >> make[6]: Leaving directory >> '/home/matmsh/installed/sages/sage-8.9/local/var/tmp/sage/build/gfortran-7.4.0/gcc-build/x86_64-pc-linux-gnu/libgcc' >> make[5]: *** [Makefile:11907: all-target-libgcc] Error 2 >> make[5]: Leaving directory >> '/home/matmsh/installed/sages/sage-8.9/local/var/tmp/sage/build/gfortran-7.4.0/gcc-build' >> make[4]: *** [Makefile:878: all] Error 2 >> make[4]: Leaving directory >> '/home/matmsh/installed/sages/sage-8.9/local/var/tmp/sage/build/gfortran-7.4.0/gcc-build' >> >> >> Error building gfortran-7.4.0 >> >> >> >> I ran >> ./configure >> MAKE='make -12' make >> >> Thanks in advance for any assistance ! >> Shing >> >> -- >> 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-s...@googlegroups.com . >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/sage-support/4f8bac3b-7301-449b-af36-8cdf22569b32%40googlegroups.com >> >> <https://groups.google.com/d/msgid/sage-support/4f8bac3b-7301-449b-af36-8cdf22569b32%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- 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/eefa66a3-e921-4c4b-9b75-5e790c48ac4d%40googlegroups.com.
[sage-support] Compile Sage 8.9 on Opensuse Tumbleweed:Error building gfortran-7.4.0
Hi, When I compile Sage 8.9 on Opensuse Tumbleweed, there is a problem building gfortran-7.4.0 : static library. */"; echo "GROUP ( libgcc_s.so.1 -lgcc )" ) > ./libgcc_s.so /usr/bin/ld: skipping incompatible /usr/lib/../lib/libc.so when searching for -lc /usr/bin/ld: i386 architecture of input file `/usr/lib/../lib/crti.o' is incompatible with i386:x86-64 output /usr/bin/ld: i386 architecture of input file `/usr/lib/../lib/crtn.o' is incompatible with i386:x86-64 output collect2: error: ld returned 1 exit status make[6]: *** [Makefile:982: libgcc_s.so] Error 1 make[6]: Leaving directory '/home/matmsh/installed/sages/sage-8.9/local/var/tmp/sage/build/gfortran-7.4.0/gcc-build/x86_64-pc-linux-gnu/libgcc' make[5]: *** [Makefile:11907: all-target-libgcc] Error 2 make[5]: Leaving directory '/home/matmsh/installed/sages/sage-8.9/local/var/tmp/sage/build/gfortran-7.4.0/gcc-build' make[4]: *** [Makefile:878: all] Error 2 make[4]: Leaving directory '/home/matmsh/installed/sages/sage-8.9/local/var/tmp/sage/build/gfortran-7.4.0/gcc-build' Error building gfortran-7.4.0 I ran ./configure MAKE='make -12' make Thanks in advance for any assistance ! Shing -- 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/4f8bac3b-7301-449b-af36-8cdf22569b32%40googlegroups.com.
[sage-support] Re: Using the simple server API
Hi, Thanks for the patch to fix simple API !I have tested the patch in sage 4.5.1. Shing On Jun 24, 1:29 pm, "David Poetzsch-Heffter" wrote: > Hi! > > I know this thread is a little old but running theSimpleSage ServerAPI > is also important for me. > > I fixed the bugs mentioned and opened a trac ticket for it: > > http://trac.sagemath.org/sage_trac/ticket/9327 > > greetings, > David Poetzsch-Heffter > > > fromhttp://www.mail-archive.com/sage-support@googlegroups.com/msg16537.html -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: How to list (and remove) loaded objects in a sage session
Thanks for all the reply! show_identifiers() and reset() are what I am looking for. But it is good to learn that Python does garbage collection in a way similar to Java. Shing On Jan 17, 12:35 am, William Stein wrote: > 2010/1/16 Shing Hing Man : > > > Hi, > > In a Sage session (within notebook or command console) , how to > > list all the loaded objects and how to remove them from the session ? > > Use show_identifiers and reset: > > sage: X = 10 > sage: show_identifiers() > ['X', 'Out', 'variables', 'In', 'view_all'] > sage: reset() > sage: show_identifiers() > [] > sag > > > I would like to reuse a connection using the simple server API. From > > time to time, I need to clear loaded objects in the session. > > > Thanks in advance for any assistance! > > > Shing > > > -- > > To post to this group, send email to sage-support@googlegroups.com > > To unsubscribe from this group, send email to > > sage-support+unsubscr...@googlegroups.com > > For more options, visit this group > > athttp://groups.google.com/group/sage-support > > URL:http://www.sagemath.org > > -- > William Stein > Associate Professor of Mathematics > University of Washingtonhttp://wstein.org -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] How to list (and remove) loaded objects in a sage session
Hi, In a Sage session (within notebook or command console) , how to list all the loaded objects and how to remove them from the session ? I would like to reuse a connection using the simple server API. From time to time, I need to clear loaded objects in the session. Thanks in advance for any assistance! Shing -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: How to convert an element in a polynomial ring to sage expression
Thanks for the solution! Shing On Jan 9, 9:24 pm, William Stein wrote: > On Sat, Jan 9, 2010 at 1:11 PM, Shing Hing Man wrote: > > > Hi, > > First, I define the ring of polynomial over the rationals, S. > > Then define a polynomial g in S. > > Is there a simple way to convert g to type > > 'sage.symbolic.expression.Expression' ? > > > sage: S. = PolynomialRing(QQ);S > > Univariate Polynomial Ring in x over Rational Field > > sage: g = x^3 - 11*x^2 + 40*x -48;type(g) > > > 'sage.rings.polynomial.polynomial_element_generic.Polynomial_rational_dense'>- > > > Thanks in advance for any assistance! > > Shing > > Yes, type SR(g): > > sage: sage: S. = PolynomialRing(QQ);S > Univariate Polynomial Ring in x over Rational Field > sage: g = x^3 - 11*x^2 + 40*x -48;type(g) > 'sage.rings.polynomial.polynomial_element_generic.Polynomial_rational_dense'> > sage: SR > Symbolic Ring > sage: SR(g) > ((x - 11)*x + 40)*x - 48 > sage: type(SR(g)) > > > In general, in Sage to convert an object obj to some structure X, do "X(obj)". > > William -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] How to convert an element in a polynomial ring to sage expression
Hi, First, I define the ring of polynomial over the rationals, S. Then define a polynomial g in S. Is there a simple way to convert g totype 'sage.symbolic.expression.Expression' ? sage: S. = PolynomialRing(QQ);S Univariate Polynomial Ring in x over Rational Field sage: g = x^3 - 11*x^2 + 40*x -48;type(g) - Thanks in advance for any assistance! Shing -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: How to produce png image with transparent background with latex.eval
Hi Jason,
Thanks for the reply! But I would like the png file of a latex
expression, not a plot, to have transparent background.
Shing
On Jan 2, 9:46 pm, Jason Grout wrote:
> Shing Hing Man wrote:
> > I am using Sage 4.0.2. The myImage.png produced by the following
> > command has a white background.
>
> > latex.eval("$\\frac{1}{2}$", {}, filename="/home/foo/myImage.png")
>
> > Is it possible to have transparent background ?
>
> > Thanks in advance for any assistance!
>
> > Shing
>
> Try something like this:
>
> plot(x^2,(x,0,1),transparent=True)
>
> It's an option to "show". Options to show are automatically passed from
> plot commands to the function that displays it.
> Seehttp://sagemath.org/doc/reference/sage/plot/plot.html?highlight=show#...
>
> Thanks,
>
> Jason
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[sage-support] How to produce png image with transparent background with latex.eval
I am using Sage 4.0.2. The myImage.png produced by the following
command has a white background.
latex.eval("$\\frac{1}{2}$", {}, filename="/home/foo/myImage.png")
Is it possible to have transparent background ?
Thanks in advance for any assistance!
Shing
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[sage-support] Re: Using the simple server API
I have just upgraded from Sage 4.0.2 to Sage 4.2.1 and have encountered the same error mentioned by Stefan. Is there a way to fix the problem ? Thanks in advance of any assistance! Shing On Dec 18, 7:59 pm, William Stein wrote: > On Fri, Dec 18, 2009 at 11:58 AM, Stefan wrote: > > Hi Robert, > > > Thanks for getting back to me. The error I'm getting is: > > > File "/sage/sage/local/lib/python2.6/site-packages/sagenb/simple/ > > twist.py", line 207, in render > > U = notebook_twist.notebook.user(username) > > exceptions.AttributeError: 'NoneType' object has no attribute 'user' > > This is probably somehow caused by the transition to the new notebook, > which is separated completely out from Sage, and which has undergone > many changes. > > William > > > > > On Dec 18, 2:17 pm, Robert Bradshaw > > wrote: > >> On Dec 18, 2009, at 8:53 AM, Stefan wrote: > > >> > Hi all, > > >> > I surfed through the discussion board and through the documentation on > >> > trying to figure out how to get the simple server API up and running. > >> > I made sure to run 'import sage.server.simple.twist' in my sage > >> > prompt. Is there a way to easily test Sage to see if the API is > >> > functioning such as entering the address into the address bar: > > >> Yes, you should be able to do that. (See the example at the top of the > >> file.) > > >> >http://localhost:8000/simple/login?username=myusername&password=mypas... > > >> > I get the dreaded "Internal Server Error" message. > > >> What does the terminal window where you started the notebook server say? > > >> - Robert > > > -- > > To post to this group, send email to sage-support@googlegroups.com > > To unsubscribe from this group, send email to > > sage-support+unsubscr...@googlegroups.com > > For more options, visit this group > > athttp://groups.google.com/group/sage-support > > URL:http://www.sagemath.org > > -- > William Stein > Associate Professor of Mathematics > University of Washingtonhttp://wstein.org -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: question about using Sage with Pydev
I have the same problem as Greg. Namely, when I run the following in PyDev from sage.rings.arith import factor print factor(266) I get the following error. ImportError: No module named rings.arith I am using Eclipse 3.5 and Pydev 1.5.0, Sage 4.0.2. In my Pydev Python project, I have 1) set python intereter to (SAGE_ROOT)/localbin/python 2) Set Properties -> External libraries to (SAGE_ROOT)/devel/sage-main It would be appreciated if someone could show me how to resolve the above error. Thanks! Shing On Sep 15, 2:35 pm, x x wrote: > > Does that provide all of the Sage functionality ? > > I am not an experienced user of sage but i can tell the following: > > The followingimportstatement is needed: from sage.allimport*, > and one has to be careful with some notation: x^2 --> x **2 and > 1/2 --> RealNumber(1)/2 (or something similar). > > The show() commands automatically starts the external image viewer programs. > > The automatic completion functionality also works. > > Kind regards, > > Niels > > (P.S. Currently Pydev extensions is also opensource and it works quite > well, except refactoring gives sometimes problems.) --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Polynomial over a finite field using integer coefficients
Thanks for the reply! Just one more question. In general, if k is a finite field, what is k(i), where i is an integer, suppose to be ? The following example suggests k(i) will be the elements in the base field as i varies. sage: k. = GF(9) sage: for i in [0..8]: print k(i) : 0 1 2 0 1 2 0 1 2 Shing On Sep 22, 4:13 pm, Simon King wrote: > Hi Shing! > > Two possibilities: > > sage: k. = GF(9) > sage: t=a^2+1 > > Now, you can learn about all possible methods for elements of k by > doing > sage: t. > (you type t, dot, and hit the tab key). > This will show you a list of possible methods. > > One of the methods is called int_repr: > sage: t.int_repr() > '5' > So, it gives you a string, that you can easily transform into an > integer: ZZ(t.int_repr()) for a Sage integer, int(t.int_repr()) for a > Python integer. > > There is also log_to_int: > sage: t.log_to_int() > 5 > Probably this last method is easier. > > The inverse way is > sage: k.fetch_int(5) > a + 2 > which is indeed the same as t: > sage: t > a + 2 > > Cheers, > Simon --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Polynomial over a finite field using integer coefficients
Conside the finite field F=GF(9),say, and the polynomial ring F[x]. The elements of F are listed below. sage: k. = GF(9) sage: for x in k:print x 0 2*a a + 1 a + 2 2 a 2*a + 2 2*a + 1 1 sage: R = PolynomialRing(k,'x') sage: sage: x = R.0 We can think of elements of k as integers from 0 to 8 : 0 <->0 2*a <->6 a + 1 <-> 4 a + 2 <-> 5 etc... Now, (a+1) + x^2 is an element of F[x]. In Sage, is it possible to write the coeffcients as integers 0 to 8? ie. Instead of (a +1) + x^2, can I write 4 + x^2 ? I have tried it and it does not work. sage: 4 + x^2 x^2 + 1 sage: Thanks in advance for any assistance ! Shing --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Eigenvalues and vectors in radical format
Thanks for all the reply ! The reason that I would prefer the answer to be in something like sqrt(47)/3 is that the answer would be converted to Latex. To me, it just look nicer in Latex to have \sqrt(47)/3 than a number with many digits. Thanks! Shing On Sep 21, 6:01 pm, Jason Grout wrote: > Shing Hing Man wrote: > > In Sage, the eigenvalues and vectors (over a Rational matrix) returns > > the answer in numerical format. > > It's not really numerical format. It's the same as the Root objects in > Mathematica or Maple. Recent versions of Mathematica even print out the > numeric approximations of the roots; Sage just prints that out the > numerical approximation by default. > > For example: > > sage: sageMatrix = matrix(QQ,[[1,4],[4,2]]) > sage: sageMatrix.eigenvalues() > [-2.531128874149275?, 5.531128874149275?] > sage: eig=sageMatrix.eigenvalues() > sage: eig[0] > -2.531128874149275? > sage: a=eig[0] > > Now, "a" is *not* a numeric value, though it is approximately equal to > the number displayed above. It is an exact root of a polynomial: > > sage: a.minpoly() > x^2 - 3*x - 14 > sage: a^2-3*a-14 > 0 > > You see the advantages to displaying things this way once you get > matrices that have eigenvalues which are roots of 3rd degree or higher > polynomials. Instead of the huge long "Root[]" displays that > Mathematica does, Sage just displays the numeric approximation for the > exact eigenvalue. > > There has been discussion of displaying a square root if the exact > eigenvalue is actually a square root (or, more generally, in technical > terms, if an element of QQbar has minpoly() or some easily-calculatable > approximation of minpoly() showing that we have a root of a quadratic, > then display the square root). However, if you do that, then you still > have the problem of not knowing approximately what the value is. Which > is easier to see and make sense of: > > sqrt(47)/3 > > or > > 2.285218200133682? > > (we get that from: > > sage: QQbar(sqrt(47)/3) > 2.285218200133682? > > ) > > Note that the two are *exactly* equal---there are no numeric issues > involved. > > Would you still like to see sqrt(47)/3 as an eigenvalue, rather than the > exactly same thing, but printed out as a numerical approximation? > > Thanks, > > Jason --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Eigenvalues and vectors in radical format
In Sage, the eigenvalues and vectors (over a Rational matrix) returns
the answer in numerical format.
Is it possible to returns the answer in radical format ?
I am aware that I can use the Maxima eigenvectors function in Sage to
get the answer in radical format. It is better if I do need to depend
on Maxima. (Please see example below.)
sage: sageMatrix = matrix(QQ,[[1,4],[4,2]])
sage: sageMatrix
[1 4]
[4 2]
sage: sageMatrix.eigenvalues()
[-2.531128874149275?, 5.531128874149275?]
sage: sageMatrix.eigenvectors_right()
[(-2.531128874149275?, [(1, -0.8827822185373187?)], 1),
(5.531128874149275?, [(1, 1.132782218537319?)], 1)]
sage: maximaMatrix=maxima('matrix[[1,4],[2,4]]')
sage: maximaMatrix
matrix[[1,4],[2,4]]
sage: maximaMatrix.eigenvectors()
[[[-(sqrt(41)-5)/2,(sqrt(41)+5)/2],[1,1]],[1,-(sqrt(41)-3)/8],[1,(sqrt
(41)+3)/8]]
Thanks in advance for any assistance!
Shing
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[sage-support] Re: How to test if an algebraic number is real
Thanks for the reply!
I will upgrade.
Shing
On Jan 4, 8:46 pm, "John Cremona" wrote:
> I tried this in 3.2.3.final and it works fine:
>
> sage: a,b = matrix(QQ,[[0,1],[-4,0]]).eigenvalues(); a,b
> (2*I, -2*I)
> sage: a in RR
> False
> sage: b in RR
> False
>
> so perhaps you should upgrade?
>
> John Cremona
>
> 2009/1/4 Shing Hing Man :
>
>
>
> > Hi,
> > I would like to test if an eigenvalue of a matrix over the
> > rationals is a real number.
> > (or The roots of the characteristic polynomial are all real.)
> > I am using
> > x in RR
>
> > Somehow, when x=2i, 'x in RR' produced the following error.
>
> > Thanks in advance for any assistance!
> > Shing
>
> > PS : I am using Sage 3.2.1.
>
> > {{{id=74|
> > E = matrix(QQ,[[0,1],[-4,0]]);E
> > ///
>
> > [ 0 1]
> > [-4 0]
> > }}}
>
> > {{{id=72|
> > E.eigenvalues()
> > ///
>
> > [2*I, -2*I]
> > }}}
>
> > {{{id=76|
> > type(E.eigenvalues()[0])
> > ///
>
> >
> > }}}
>
> > {{{id=73|
> > E.eigenvalues()[0] in RR
> > ///
>
> > Traceback (most recent call last):
> > File "", line 1, in
> > File "/home/matmsh/.sage/sage_notebook/worksheets/admin/128/code/
> > 211.py", line 7, in
> > exec compile(ur'E.eigenvalues()[_sage_const_0 ] in RR' + '\n',
> > '', 'single')
> > File "/usr/local/lib/sage-3.2.1/local/lib/python2.5/site-packages/
> > SQLAlchemy-0.4.6-py2.5.egg/", line 1, in
>
> > File "parent.pyx", line 324, in
> > sage.structure.parent.Parent.__contains__ (sage/structure/parent.c:
> > 3925)
> > File "parent.pyx", line 284, in
> > sage.structure.parent.Parent.__call__ (sage/structure/parent.c:3709)
> > File "coerce_maps.pyx", line 146, in
> > sage.structure.coerce_maps.NamedConvertMap._call_ (sage/structure/
> > coerce_maps.c:3589)
> > File "/usr/local/lib/sage-3.2.1/local/lib/python2.5/site-packages/
> > sage/rings/qqbar.py", line 2725, in _mpfr_
> > return AA(self)._mpfr_(field)
> > File "/usr/local/lib/sage-3.2.1/local/lib/python2.5/site-packages/
> > sage/rings/qqbar.py", line 499, in __call__
> > raise ValueError, "Cannot coerce algebraic number with non-zero
> > imaginary part to algebraic real"
> > ValueError: Cannot coerce algebraic number with non-zero imaginary
> > part to algebraic real
> > }}}
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[sage-support] How to test if an algebraic number is real
Hi,
I would like to test if an eigenvalue of a matrix over the
rationals is a real number.
(or The roots of the characteristic polynomial are all real.)
I am using
x in RR
Somehow, when x=2i, 'x in RR' produced the following error.
Thanks in advance for any assistance!
Shing
PS : I am using Sage 3.2.1.
{{{id=74|
E = matrix(QQ,[[0,1],[-4,0]]);E
///
[ 0 1]
[-4 0]
}}}
{{{id=72|
E.eigenvalues()
///
[2*I, -2*I]
}}}
{{{id=76|
type(E.eigenvalues()[0])
///
}}}
{{{id=73|
E.eigenvalues()[0] in RR
///
Traceback (most recent call last):
File "", line 1, in
File "/home/matmsh/.sage/sage_notebook/worksheets/admin/128/code/
211.py", line 7, in
exec compile(ur'E.eigenvalues()[_sage_const_0 ] in RR' + '\n',
'', 'single')
File "/usr/local/lib/sage-3.2.1/local/lib/python2.5/site-packages/
SQLAlchemy-0.4.6-py2.5.egg/", line 1, in
File "parent.pyx", line 324, in
sage.structure.parent.Parent.__contains__ (sage/structure/parent.c:
3925)
File "parent.pyx", line 284, in
sage.structure.parent.Parent.__call__ (sage/structure/parent.c:3709)
File "coerce_maps.pyx", line 146, in
sage.structure.coerce_maps.NamedConvertMap._call_ (sage/structure/
coerce_maps.c:3589)
File "/usr/local/lib/sage-3.2.1/local/lib/python2.5/site-packages/
sage/rings/qqbar.py", line 2725, in _mpfr_
return AA(self)._mpfr_(field)
File "/usr/local/lib/sage-3.2.1/local/lib/python2.5/site-packages/
sage/rings/qqbar.py", line 499, in __call__
raise ValueError, "Cannot coerce algebraic number with non-zero
imaginary part to algebraic real"
ValueError: Cannot coerce algebraic number with non-zero imaginary
part to algebraic real
}}}
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[sage-support] Re: Latex expression to png
I am using Sage 3.2,1 and it does not work with a complicated
filename.
I will try it in Sage 3.2.3.
Geogr: Thanks for the reply! I'll try latexmath2y after I find out how
to import a python class into Sage.
Thanks!
Shing
On Jan 3, 11:25 pm, "William Stein" wrote:
> On Sat, Jan 3, 2009 at 2:08 PM, Shing Hing Man wrote:
>
>
>
> > Is there a command in SAGE that converts a latex expression to png (or
> > gif) directly.
>
> > The following post in the archive has a workaround.
>
> > ttp://groups.google.com/group/sage-support/browse_thread/thread/570022e72a22d3bd/517d51a58abc67f8?lnk=gst&q=Latex+to+png#517d51a58abc67f8
>
> > I wonder if there is a quicker way of doing it.
>
> > Thanks in advance for any assistance!
>
> Do
>
> sage: L = sage.misc.latex.Latex()
> sage: L.eval('$x^2$',filename='a.png')
>
> NOTE: There was a bug Sage-3.2.2, I think, which I fixed in the
> soon-to-be released sage-3.2.3, where the above wouldn't work if you
> give a more complicated path to the file, e.g., :
>
> sage: L.eval('$x^2$', filename='/tmp/a.png')
>
> William
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[sage-support] Latex expression to png
Is there a command in SAGE that converts a latex expression to png (or gif) directly. The following post in the archive has a workaround. ttp://groups.google.com/group/sage-support/browse_thread/thread/570022e72a22d3bd/517d51a58abc67f8?lnk=gst&q=Latex+to+png#517d51a58abc67f8 I wonder if there is a quicker way of doing it. Thanks in advance for any assistance! Shing --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Latex of a product of polynomials with simplification
Thanks for all the replies!
Shing
On Aug 23, 9:28 pm, "William Stein" <[EMAIL PROTECTED]> wrote:
> On Sat, Aug 23, 2008 at 12:50 PM, daveloeffler <[EMAIL PROTECTED]> wrote:
>
> >> How to get the Latex expression of fg without expanding the product ?
> >> ie (1 + t + 2 t^{2}) (1+t) .
>
> > Can't one use the Factorization class to do this? I tried
> >> fg = Factorization([(f,1), (g,1)])
>
> > and then you can print fg to latex. (I guess the point is that the
> > Factorization class doesn't enforce that the factors are irreducible.)
>
> Cool, that's a great idea!
>
> William
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[sage-support] Latex of a product of polynomials with simplification
Hi,
Consider polynomials
f = 1 +t + 2*t^2
g=1+t
over R. = PolynomialRing(GF(7));
How to get the Latex expression of fg without expanding the product ?
ie (1 + t + 2 t^{2}) (1+t) .
latex( fg) returns
2 t^{3} + 3 t^{2} + 2 t + 1
Thanks in advance for any assistance!
I am using Sage 3.0,6.
Shing
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[sage-support] Re: Why standalone Python/Sage scripts take longer to run ?
Thanks for all the reply! Shing On Jul 21, 5:26 pm, Robert Bradshaw <[EMAIL PROTECTED]> wrote: > On Jul 20, 2008, at 1:24 PM, Shing Hing Man wrote: > > > > > > > If I submit a command that takes a long time to run, > > > eg > > (1) http://localhost:8000/simple/compute?session=(session) > > &code=factor(2^1000 > > -1) > > > then the immediately returned JSON will have status equals computing. > > > I have modified my Java program, so that after (1) is submitted, > > > I keep querying SAGE with > > http://localhost:8000/simple/status?session=(session)&cell= > > (cellId) > > > until the returned status is done. > > Yes, this is by design. > > > Is there a better way to wait for (or be notified of) the completion > > of a command ? > > You can pass a timeout parameter, which will control how long it > waits for completion before returning a "computing" status. IIRC (but > check the code) -1 means wait until it's done. > > - Robert --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Why standalone Python/Sage scripts take longer to run ?
If I submit a command that takes a long time to run,
eg
(1) http://localhost:8000/simple/compute?session=(session)&code=factor(2^1000
-1)
then the immediately returned JSON will have status equals computing.
I have modified my Java program, so that after (1) is submitted,
I keep querying SAGE with
http://localhost:8000/simple/status?session=(session)&cell=(cellId)
until the returned status is done.
Is there a better way to wait for (or be notified of) the completion
of a command ?
Shing
On Jul 20, 12:17 pm, Shing <[EMAIL PROTECTED]> wrote:
> Thanks for the sample code! I have managed to convert it to Java and
> successfully
> execute factor(2006) in sage from Java.
>
> Shing
>
> public class SageSession {
>
> public String getSession(String hostname, String port, String
> password) {
>
> String session = null;
> String httpStr = "http://"; + hostname + ":" + port
> + "/simple/login?username=admin&password=" +
> password;
> try {
>
> URL url = new URL(httpStr);
> HttpURLConnection connection = (HttpURLConnection) url
> .openConnection();
> InputStream is = connection.getInputStream();
> BufferedReader br = new BufferedReader(new
> InputStreamReader(is));
> String line;
> while ((line = br.readLine()) != null) {
> //System.out.println("OUT> " + line);
> if (line.indexOf("session") > 0) {
> StringTokenizer tokenizer = new
> StringTokenizer(line,
> "\": ");
> tokenizer.nextElement();
> session = (String)
> tokenizer.nextElement();
> break;
> }
> }
> br.close();
> is.close();
> connection.disconnect();
> }
>
> catch (MalformedURLException e) {
> e.printStackTrace();
> } catch (IOException e) {
> e.printStackTrace();
> }
>
> return session;
> }
>
> /**
> * Execute expression in sage and return the result as a String.
> */
> public String sage(String hostname, String port, String session,
> String expression) {
>
> StringBuffer result = new StringBuffer();
> try {
> String httpStr = "http://"; + hostname + ":" + port +
> "/simple/
> compute?session="
> + session + "&code=" +
> URLEncoder.encode(expression,"UTF-8");
> URL url = new URL(httpStr);
> HttpURLConnection connection = (HttpURLConnection) url
> .openConnection();
> InputStream is = connection.getInputStream();
> BufferedReader br = new BufferedReader(new
> InputStreamReader(is));
> String line;
> while ((line = br.readLine()) != null) {
> //System.out.println("OUT> " + line);
> result.append(line +"\n");
>
> }
> br.close();
> is.close();
> connection.disconnect();
> }
>
> catch (MalformedURLException e) {
> e.printStackTrace( );
> } catch (IOException e) {
> e.printStackTrace();
> }
>
> return result.toString();
> }
>
> public static void main(String[] str) throws Exception {
> String host = "localhost";
> String port = "8000";
> String password = "xxx";
>
> SageSession connection = new SageSession();
> String session = connection.getSession(host, port, password);
> System.out.println("session =" + session);
> String expression ="factor(2^12 -1)";
> String result = connection.sage(host, port, session,
> expression);
> System.out.println("expression =" + result );
>
> }
>
> }
>
> On Jul 19, 8:34 pm, "Mike Hansen" <[EMAIL PROTECTED]> wrote:
>
> > Hi Shing,
>
> > You can actually make HTTP calls to the Sage notebook using Robert
> > Bradshaw's simple API. For example, the following is a (condensed)
> > Python script which authenticates with a running Sage notebook.
>
> > import urllib, re
> > def get_url(url)
[sage-support] Re: Running a sage script from command line caused a run away pocess
Every time I run 'sage derivative.sage' at a command prompt, a new run away process is created, and the previous created run away processes are still alive. Since this might be fixed in the recent versions of SAGE, the best course of action is to upgrade my linux distribution and try SAGE 3.0.2. Thanks! Shing Home page : http://www.lombok.demon.co.uk/ --- On Sat, 31/5/08, William Stein <[EMAIL PROTECTED]> wrote: > From: William Stein <[EMAIL PROTECTED]> > Subject: [sage-support] Re: Running a sage script from command line caused a > run away pocess > To: sage-support@googlegroups.com > Date: Saturday, 31 May, 2008, 10:03 PM > On Sat, May 31, 2008 at 6:56 AM, Shing Hing Man > <[EMAIL PROTECTED]> wrote: > > > > Thanks for the suggestion! > > Last week, I downloaded 3.0.2 and the build failed > probably because > > the gcc on my PC is version 3.3.5. > > I need to upgrade my Linux distribution before I can > retry installing > > sage 3.0.2. > > 1. Sage cannot be built with gcc <= 3.4.x. > > 2. There is a SUSE 64-bit binary here, but it's > unlikely to run on such > an old linux install: >http://sagemath.org/SAGEbin/linux/64bit/ > > 3. If you restart sage after running derivate.sage, then > check top, > does the clisp.run process continue running or not? > It's probably a bad idea for us to try to debug this > though, since > I think I already did long ago and the fix is in newer > versions > of Sage. > > William > > __ Sent from Yahoo! Mail. A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Running a sage script from command line caused a run away pocess
Thanks for the suggestion! Last week, I downloaded 3.0.2 and the build failed probably because the gcc on my PC is version 3.3.5. I need to upgrade my Linux distribution before I can retry installing sage 3.0.2. Shing Home page : http://www.lombok.demon.co.uk/ --- On Sat, 31/5/08, William Stein <[EMAIL PROTECTED]> wrote: > From: William Stein <[EMAIL PROTECTED]> > Subject: [sage-support] Re: Running a sage script from command line caused a > run away pocess > To: sage-support@googlegroups.com > Date: Saturday, 31 May, 2008, 9:41 PM > On Sat, May 31, 2008 at 6:20 AM, Shing > <[EMAIL PROTECTED]> wrote: > > > > Hi, > > > > I am running SAGE 2.5.3 on Suse 9.3 . > > You may want to upgrade, since the current version of Sage > is sage-3.0.2, which > has significantly improved since Sage 2.5.3. > > William > > __ Sent from Yahoo! Mail. A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
