Re: [sage-support] Re: Typesetting arbitrary LaTeX
On 2011-12-14 18:56, John H Palmieri wrote: > (although I think this never uses JSMath, in case you wanted that). Yes, I did mean JSMath. I have an idea on how to fix this, see #12156. -- 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] Probability of a Boolean Function
I have a Boolean Function f which I know is not balanced. In fact f=0 with probability 1/4. If I use the function f.is_balanced() it tells me that the function is not balanced, which is fine. But is there a function which will tell me the what the probability of a Boolean function being zero is ? If not is there any way I can find out whether the probability of a boolean function f=0 is equal to 'p' or not? -- 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
Re: [sage-support] Bug in Minimum Spanning Tree
On Thu, Dec 15, 2011 at 8:34 AM, Albert Heinle wrote: > Hello Sage-Team, > > a friend of mine and I have found a bug today in sage in the algorithm for > computing the minimum spanning tree. > > We are using Sage Version 4.7, Release Date: 2011-05-23 on a mac with OS X > Snow Leopard. > > Here is the short example, where the algorithms do fail: > > g = Graph(weighted = True) > g.add_vertices(range(1,5)) > for v in g.vertices(): > for u in g.vertices(): > if (u == 1 and v == 3) or (u == 3 and v == 1): > g.add_edge(u,v,100) > continue > if not u == v: > g.add_edge((u,v,1)) > > which is a simple example. The graph looks like this. The edges have all > weight 1, except from the one between 3 and 1, which has 100. > > > > Now, the call of > g.min_spanning_tree() > results in > [(1, 2, 1), (1, 3, 100), (1, 4, 1)] > which is clearly not the minimum spanning tree. We also tried another > algorithm (Prim Edge) and got the same results. > I got this: sage: from sage.graphs.spanning_tree import kruskal sage: kruskal(g, check=True) [(1, 2, 1), (1, 4, 1), (2, 3, 1)] The docs say "By default, we turn off the sanity checks for performance reasons." Do you think this could explain it? > > For further questions on this report, feel free to respond to this mail. > > Thanks in advance for fixing it. > > Albert Heinle > -- > 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 > -- 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] Upgrade from source fails
I am trying to upgrade my Sage 4.7.1 installation using "./sage - upgrade" [and also using "upgrade()" from within sage]. After checking mirrors, telling me that six packages will be upgraded and warning me that it could take hours, the upgrade aborts with the message "There are uncommitted changes in the Sage root repository. Aborting." Is this a problem on my installation (actually two independent installations) or at the remote end of things? -- 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] Ann: OpenOpt and FuncDesigner 0.37
Hi all, I'm glad to inform you about new release 0.37 (2011-Dec-15): OpenOpt (numerical optimization): IPOPT initialization time gap (time till first iteration) for FuncDesigner models has been decreased Some improvements and bugfixes for interalg, especially for "search all SNLE solutions" mode (Systems of Non Linear Equations) Eigenvalue problems (EIG) (in both OpenOpt and FuncDesigner) Equality constraints for GLP (global) solver de Some changes for goldenSection ftol stop criterion GUI func "manage" - now button "Enough" works in Python3, but "Run/ Pause" not yet (probably something with threading and it will be fixed in Python instead) FuncDesigner: Major sparse Automatic differentiation improvements for badly- vectorized or unvectorized problems with lots of constraints (except of box bounds); some problems now work many times or orders faster (of course not faster than vectorized problems with insufficient number of variable arrays). It is recommended to retest your large-scale problems with useSparse = 'auto' | True| False Two new methods for splines to check their quality: plot and residual Solving ODE dy/dt = f(t) with specifiable accuracy by interalg Speedup for solving 1-dimensional IP by interalg SpaceFuncs and DerApproximator: Some code cleanup You may trace OpenOpt development information in our recently created entries in Twitter and Facebook, see http://openopt.org for details. See also: FuturePlans, this release announcement in OpenOpt forum Regards, D. -- 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: Please explain this wrong answer with implict multiplication....
I had it turned on but I guess it doesn't get triggered for x (x -1). Any way to change the behavior or does that require a patch to Sage? On Dec 15, 1:37 am, Jason Grout wrote: > On 12/15/11 1:31 AM, Chris Seberino wrote: > > > I know Sage has some issues with a variable in front of parens when > > using implicit multiplication. Why did that make the first give the > > wrong answer when using implicit multiplication? How is sage > > interpreting it? > > > sage: solve(3 + x (x-1)==5,x) > > [x == 3] > > sage: solve(3 + x*(x-1)==5,x) > > [x == 2, x == -1] > > You have to explicitly turn on implicit multiplication; it's not on by > default. In your case above, it's not on (unless you turned it on) > > So "x(x-1)" is interpreted as: > > f(x)=x > f(x-1) > > i.e., x(x-1) is just x-1 (the function y=x evaluated at x-1) > > 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 URL: http://www.sagemath.org
[sage-support] How to get the message from the standard output when interfacing gp and SAGE ?
Hi,
I am using Sage to pass elements between gp and Magma. It works just
fine, except for the messages on the standard output.
My version of gp should print some timings, but when I call it through
SAGE, this doesn't work.
I believe this behavior is ruled by interfaces/gp.py, but I am not
experienced enough to make the proper modifications.
If I do :
sage : from sage.interfaces.expect import StdOutContext
sage : ctx = StdOutContext(gp)
sage : with ctx : gp.my_gp_function(...)
I get my messages, but with a whole bunch of useless stuffs.
I also have the option to do
sage : gp.eval('\\g 1')
that turns the debug mode on, but I have the same problem : it prints
out too many things.
Thanks
Jean-François
--
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[sage-support] Re: Please explain this wrong answer with implict multiplication....
On Dec 15, 2:26 pm, Chris Seberino wrote: > I had it turned on but I guess it doesn't get triggered for x (x -1). Even when you turn it on, the behavior is not uniform as the user might expect, though there is a logic. sage: implicit_multiplication(10) sage: (x) (x-1) (x - 1)*x sage: x (x-1) x - 1 sage: (x-1)x (x - 1)*x sage: x(x-1) x - 1 > Any way to change the behavior or > does that require a patch to Sage? > By the way, this is poorly documented in the sense that implicit_multiplication? only refers to `implicit_mul`, which however is not in the global namespace. But sage: sage.misc.preparser.implicit_mul? gives Definition: sage.misc.preparser.implicit_mul(code, level=5) Docstring: Inserts *'s to make implicit multiplication explicit. INPUT: * ``code`` -- a string; the code with missing *'s * ``level`` -- an integer (default: 5); how aggressive to be in placing *'s * 0 - Do nothing * 1 - Numeric followed by alphanumeric * 2 - Closing parentheses followed by alphanumeric * 3 - Spaces between alphanumeric * 10 - Adjacent parentheses (may mangle call statements) Perhaps it's time to add a level. -- 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: Please explain this wrong answer with implict multiplication....
On Dec 15, 11:26 am, Chris Seberino wrote: > I had it turned on but I guess it doesn't get triggered for x (x -1). > Any way to change the behavior or > does that require a patch to Sage? You've already discussed that: http://groups.google.com/group/sage-devel/browse_thread/thread/e67a869f71140ca7/cc07b5ed38951159?hl=en&#cc07b5ed38951159 -- 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
Re: [sage-support] Upgrade from source fails
On Thu, Dec 15, 2011 at 7:16 AM, Anthony Wickstead wrote: > I am trying to upgrade my Sage 4.7.1 installation using "./sage - > upgrade" [and also using "upgrade()" from within sage]. After checking > mirrors, telling me that six packages will be upgraded and warning me > that it could take hours, the upgrade aborts with the message "There > are uncommitted changes in the Sage root repository. Aborting." Is > this a problem on my installation (actually two independent > installations) or at the remote end of things? > This is a bug in Sage, which has been discussed a few times on sage-devel. I got around it by commenting out the relevant sys.exit(2) line in SAGE_ROOT/local/bin/sage-update -- 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
Re: [sage-support] Upgrade from source fails
On 2011-12-15 22:45, William Stein wrote: > This is a bug in Sage It's not really a bug, it is more of a misfeature[1]. It is *intented* behaviour with unfortunate consequences. [1] http://catb.org/jargon/html/M/misfeature.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
Re: [sage-support] Upgrade from source fails
On Thu, Dec 15, 2011 at 1:59 PM, Jeroen Demeyer wrote: > On 2011-12-15 22:45, William Stein wrote: >> This is a bug in Sage > It's not really a bug, it is more of a misfeature[1]. I'm confused, because I think it's a straight up bug. The error message says there are uncommitted changes. However, if you do hg commit it will say there is nothing to commit. I think the code for checking for uncommitted changes is wrong, since it uses "hg status" and ignores the possibility of files that are not in the repo and not in .hgignore, hence gets thrown off by all those untracked files (which are listed with a ? in the output of "hg status"). > It is *intented* > behaviour with unfortunate consequences. > > [1] http://catb.org/jargon/html/M/misfeature.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 -- William Stein Professor of Mathematics University of Washington http://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] Compiling sage on Ubuntu 11.10 under VirtualBox
I am having problems compiling Sage on the following setup: ASUS K52J laptop with Intel Core I3 processor with 4G RAM running Windows 7 VirtualBox 4.1.6 Guest OS Ubuntu 11.10 desktop (i386) with 1933 M RAM allocated. VirtualBox guest additions have been installed The install fails during the installation of Atlas with an Illegal instruction. Here is atlas-3.8.4.log up to the first error : Warning: Attempted to overwrite SAGE_ROOT environment variable atlas-3.8.4 Machine: Linux UbuntuSage 3.0.0-13-generic #22-Ubuntu SMP Wed Nov 2 13:25:36 UTC 2011 i686 i686 i386 GNU/Linux Deleting directories from past builds of previous/current versions of atlas-3.8.4 Extracting package /home/mike/sage/sage-4.7.2/spkg/standard/atlas-3.8.4.spkg ... -rw-r--r-- 1 mike mike 2874766 2011-06-17 12:33 /home/mike/sage/sage-4.7.2/spkg/standard/atlas-3.8.4.spkg Finished extraction Host system uname -a: Linux UbuntuSage 3.0.0-13-generic #22-Ubuntu SMP Wed Nov 2 13:25:36 UTC 2011 i686 i686 i386 GNU/Linux CC Version gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/i686-linux-gnu/4.6.1/lto-wrapper Target: i686-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.6.1-9ubuntu3' --with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++,go --prefix=/usr --program-suffix=-4.6 --enable-shared --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.6 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-plugin --enable-objc-gc --enable-targets=all --disable-werror --with-arch-32=i686 --with-tune=generic --enable-checking=release --build=i686-linux-gnu --host=i686-linux-gnu --target=i686-linux-gnu Thread model: posix gcc version 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3) make[2]: Entering directory `/home/mike/sage/sage-4.7.2/spkg/build/atlas-3.8.4/ATLAS-build' gcc -I/home/mike/sage/sage-4.7.2/spkg/build/atlas-3.8.4/ATLAS-build/../src//CONFIG/include -g -w -c /home/mike/sage/sage-4.7.2/spkg/build/atlas-3.8.4/ATLAS-build/../src//CONFIG/src/atlconf_misc.c gcc -I/home/mike/sage/sage-4.7.2/spkg/build/atlas-3.8.4/ATLAS-build/../src//CONFIG/include -g -w -o xconfig /home/mike/sage/sage-4.7.2/spkg/build/atlas-3.8.4/ATLAS-build/../src//CONFIG/src/config.c atlconf_misc.o make[2]: Leaving directory `/home/mike/sage/sage-4.7.2/spkg/build/atlas-3.8.4/ATLAS-build' ./xconfig -d s /home/mike/sage/sage-4.7.2/spkg/build/atlas-3.8.4/ATLAS-build/../src/ -d b /home/mike/sage/sage-4.7.2/spkg/build/atlas-3.8.4/ATLAS-build -Ss flapack /home/mike/sage/sage-4.7.2/local/lib/liblapack.a -Si cputhrchk 0 -Fa alg -fPIC -C if sage_fortran -C xc gcc -C ic gcc -C dm gcc -C sm gcc -C dk gcc -C sk gcc -b 32 -O 1 make[2]: Entering directory `/home/mike/sage/sage-4.7.2/spkg/build/atlas-3.8.4/ATLAS-build' gcc -I/home/mike/sage/sage-4.7.2/spkg/build/atlas-3.8.4/ATLAS-build/../src//CONFIG/include -g -w -c /home/mike/sage/sage-4.7.2/spkg/build/atlas-3.8.4/ATLAS-build/../src//CONFIG/src/atlconf_misc.c gcc -I/home/mike/sage/sage-4.7.2/spkg/build/atlas-3.8.4/ATLAS-build/../src//CONFIG/include -g -w -o xconfig /home/mike/sage/sage-4.7.2/spkg/build/atlas-3.8.4/ATLAS-build/../src//CONFIG/src/config.c atlconf_misc.o make[2]: Leaving directory `/home/mike/sage/sage-4.7.2/spkg/build/atlas-3.8.4/ATLAS-build' ./xconfig -d s /home/mike/sage/sage-4.7.2/spkg/build/atlas-3.8.4/ATLAS-build/../src/ -d b /home/mike/sage/sage-4.7.2/spkg/build/atlas-3.8.4/ATLAS-build -Ss flapack /home/mike/sage/sage-4.7.2/local/lib/liblapack.a -Si cputhrchk 0 -Fa alg -fPIC -C if sage_fortran -C xc gcc -C ic gcc -C dm gcc -C sm gcc -C dk gcc -C sk gcc -b 32 -O 1 make[2]: Entering directory `/home/mike/sage/sage-4.7.2/spkg/build/atlas-3.8.4/ATLAS-build' gcc -I/home/mike/sage/sage-4.7.2/spkg/build/atlas-3.8.4/ATLAS-build/../src//CONFIG/include -g -w -c /home/mike/sage/sage-4.7.2/spkg/build/atlas-3.8.4/ATLAS-build/../src//CONFIG/src/probe_comp.c gcc -I/home/mike/sage/sage-4.7.2/spkg/build/atlas-3.8.4/ATLAS-build/../src//CONFIG/include -g -w -o xprobe_comp probe_comp.o atlconf_misc.o rm -f config1.out make -j1 atlas_run atldir=/home/mike/sage/sage-4.7.2/spkg/build/atlas-3.8.4/ATLAS-build exe=xprobe_comp args="-v 0 -o atlconf.txt -O 1 -A 19 -Si nof77 0 -C ic 'gcc' -Fa ic '-fPIC' -C sm 'gcc' -Fa sm '-fPIC' -C dm 'gcc' -Fa dm '-fPIC' -C sk 'gcc' -Fa sk '-fPIC' -C dk 'gcc' -Fa dk '-fPIC' -C xc 'gcc' -Fa xc '-fPIC' -C if 'sage_fortran' -Fa if '-fPIC' -b 32" \ redir=config1.out make[3]: Entering directory `/home/mike/sage/sage-4.7.2/spkg/build/atlas-3.8.4/ATLAS-build' cd /home/mike/sage/sage-4.7.2/spkg/build/atlas-3.8.4/ATLAS-buil
[sage-support] Re: Compiling sage on Ubuntu 11.10 under VirtualBox
Is that just the first error in your log or does the compilation really stop there? Atlas tests out different CPU instructions, some of which are not supported by an i3 and will lead to an illegal instruction error. This is normal. -- 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: Compiling sage on Ubuntu 11.10 under VirtualBox
On Dec 15, 5:49 pm, Michael Fawcett wrote: > I am having problems compiling Sage on the following setup: > > ASUS K52J laptop with Intel Core I3 processor with 4G RAM running Windows 7 > VirtualBox 4.1.6 > Guest OS Ubuntu 11.10 desktop (i386) with 1933 M RAM allocated. VirtualBox > guest additions have been installed > > The install fails during the installation of Atlas with an Illegal > instruction. > Hi, I have a similar situation (vmware on windows 7). I don't recall if I get the exact same error but I do get something similar. The build seems to stop with an error but it also seems to be only that the output is not updating. If I leave the build for a while (maybe 10 min) it will resume. My guess is that the output is buffered so you don't see that the build is still working. Try giving it some time first. Cheers, Adam -- 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
