Re: [sage-support] Problem with sagetex with a large file (many sage calculations)
On Fri, 16 Dec 2011 at 12:41PM -0800, Steven McKay wrote: > Hi, > I have been writing a large set of notes for Differential Equations, > and have come across an annoying problem (that is probably my fault.) > After adding enough sage constructions to my latex file, I started > getting errors like: > [...] > > Which repeats over and over many times. This is only for > constructions using desolve_odeint, and only for the later sage > constructions, not the earlier ones. *However*, the same sage code in > a notebook runs as expected without errors. So I know I don't have > any errors in my code that is doing this. In fact, I took the sections > with the "offending code" and compiled them separately in a smaller > document, and the sage code ran correctly. > > So, it seems as if I am overloading sage with too many calculations. > This confuses me, however, because I thought sage did each calculation > separately. It does them separately, but all in one session. I'm not sure what is happening here. Can you provide a minimal example that demonstrates the problem? I've never seen anything like this, and can't imagine why it would happen. Dan -- --- Dan Drake - http://mathsci.kaist.ac.kr/~drake --- signature.asc Description: Digital signature
Re: [sage-support] Two problems using SageTex on Sage 4.7.2
On Fri, 16 Dec 2011 at 03:54AM -0800, Anthony Wickstead wrote: > The first, that I can work around although it is redious, is that > sagetex when processing "test.tex" now produces "test.sagetex.sage" > rather than "test.sage". When processed using remote-sagetex.py this > puts plots into a directory "sage-plots-for-test.sagetex.tex". > Unfortunately when running LaTeX on test.tex again LaTeX looks in > "sage-plots-for-test.tex" for the plots. A rename can get around this > but it is a bit of a pain. remote-sagetex.py hasn't been maintained very much, and I'm actually a bit surprised it even works. I've made a note to fix this, which won't happen in the immediate future because of travel and the start of classes. But it's on my lsit. Dan -- --- Dan Drake - http://mathsci.kaist.ac.kr/~drake --- signature.asc Description: Digital signature
Re: [sage-support] Issues with bessel function.
On 01/19/2012 05:57 PM, Eric Kangas wrote:
I have worked with bessel functions before and haven't had a problem
until now.
Code:
-
r,p,z,ro,gro,g,k = var('r, p, z,ro,gro,g,k')
g = 1; k = 1; ro = 1; gro = 1
def Psi(r,z): return lambda r,z: (r*bessel_J(1, g*r))/(ro*bessel_J(1,
gro))*cos(k*z) if y != 0 and t != 0 else infinity
Error:
-
Syntax Error
What are 'y' and 't'? When did it crash -- while you were typing it in,
when Psi was called, or when the returned function was called?
I tried guessing at some inputs and haven't seen the error. If you could
come up with a test case it would help!
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Re: [sage-support] Minor issue: Polynomial simplify, square roots
On 01/17/2012 04:54 AM, Jori Mantysalo wrote:
After saying
R. = PolynomialRing(QQ)
both of these works:
expand ( (t-(5-sqrt(7))) * (t-(5+sqrt(7))) )
expand ( (t-(5-sqrt(7))) * (t-(5+sqrt(7))) )
and I got t^2 - 10*t + 18 and t^2 - 4*t + 1 as expected. However,
expand ( (t-(2-sqrt(3))) * (t-(2+sqrt(3))) * (t-(5-sqrt(7))) * (t-(5+sqrt(7))) )
does not work in a similar way. If I put ".simplify_full()" at the end of
the expression, I got simplified answer.
What is logic behind this?
Sometimes expanding a product simplifies it, and sometimes it doesn't.
This is the smallest example I could come up with.
sage: a,b = var('a,b')
sage: f = a*(a+b)
sage: f.expand()
a^2 + a*b
sage: f.simplify()
(a + b)*a
Furthermore, sage automatically simplifies some *really* easy
expressions like,
sage: 1*a + 2*a
3*a
That's why you get an answer with three terms in the first two cases. It
won't automatically combine square roots, though:
sage: sqrt(2)*a + sqrt(3)*a
sqrt(2)*a + sqrt(3)*a
So the "simplified" answer in the first two cases was just lucky. In
general you have to call simplify() or full_simplify().
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[sage-support] Re: Attribute error when multiplying elements of a quotient free algebra
Ah, I understand. Thank you for your help :) -Jim On Jan 17, 4:10 pm, Maarten Derickx wrote: > Dear Jim, > > The problem is that kQ.gens()[0] is not an element of the kQ.monoid() as is > required as said in the documentation and the examples. To fix your problem: > > sage: kQ = FreeAlgebra(QQ ,2 , 'x') > sage: gens=kQ.monoid().gens() > sage: mons = [gens[0], gens[1], gens[0]*gens[1]] > sage: mats = [Matrix(QQ,3,[1, 0, 0, 0, 1, 0, 0, 0, 0]), Matrix(QQ, 3, [0, > 0, > : 0, 0, 0, 0, 0, 0, 1])] > sage: A = FreeAlgebraQuotient(kQ, mons, mats, 'x') > sage: A.gens()[0]*A.gens()[1] > 0 -- 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] Issues with bessel function.
I have worked with bessel functions before and haven't had a problem
until now.
Code:
-
r,p,z,ro,gro,g,k = var('r, p, z,ro,gro,g,k')
g = 1; k = 1; ro = 1; gro = 1
def Psi(r,z): return lambda r,z: (r*bessel_J(1, g*r))/(ro*bessel_J(1,
gro))*cos(k*z) if y != 0 and t != 0 else infinity
Error:
-
Syntax Error
ERROR: An unexpected error occurred while tokenizing input
The following traceback may be corrupted or invalid
The error message is: ('EOF in multi-line statement', (949, 0))
---
TypeError Traceback (most recent call last)
/home/nooniensoong97/ in ()
/home/nooniensoong97/programs/sage-4.7.2/local/lib/python2.6/site-
packages/sage/calculus/all.pyc in symbolic_expression(x)
94 return vector(SR,x)
95 else:
---> 96 return SR(x)
97
98 import desolvers
/home/nooniensoong97/programs/sage-4.7.2/local/lib/python2.6/site-
packages/sage/structure/parent.so in
sage.structure.parent.Parent.__call__ (sage/structure/parent.c:7326)()
/home/nooniensoong97/programs/sage-4.7.2/local/lib/python2.6/site-
packages/sage/structure/coerce_maps.so in
sage.structure.coerce_maps.DefaultConvertMap_unique._call_ (sage/
structure/coerce_maps.c:3268)()
/home/nooniensoong97/programs/sage-4.7.2/local/lib/python2.6/site-
packages/sage/structure/coerce_maps.so in
sage.structure.coerce_maps.DefaultConvertMap_unique._call_ (sage/
structure/coerce_maps.c:3171)()
/home/nooniensoong97/programs/sage-4.7.2/local/lib/python2.6/site-
packages/sage/symbolic/ring.so in
sage.symbolic.ring.SymbolicRing._element_constructor_ (sage/symbolic/
ring.cpp:4418)()
TypeError:
Some sort of syntax error I don't see any.
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[sage-support] Re: plots in 3d are not published?
Thanks so much! Linda -- 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] Order of a cyclic group
On 19 January 2012 15:39, Santanu Sarkar wrote: > Consider a polynomial f(x) over GF(2)[x]. How is it possible > to find the order of the cyclic group generated by f(x)? What do you mean by the group generated by the polynomial? Do you mean the group generated by a root of f (when f is irreducible)? John Cremona > > -- > 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] Order of a cyclic group
Consider a polynomial f(x) over GF(2)[x]. How is it possible to find the order of the cyclic group generated by f(x)? -- 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] sage build FAIL - An error occurred while installing patch-2.5.9.p2
Having patch fail to build sounds truly strange. Is your source tarball corrupt? I'd check the md5sum and make sure it's correct. If it is, then something bizarre is happening so that patch isn't building addext.o, argmatch.o, and those other files. Dan -- --- Dan Drake - http://mathsci.kaist.ac.kr/~drake --- signature.asc Description: Digital signature
Re: [sage-support] sage build FAIL - An error occurred while installing patch-2.5.9.p2
On 2012-01-18 21:48, Sean McDuffee wrote: > Hi, > > Trying to build sage on an Intel x86_64 4 core cpu based computer > running Fedora 14. GCC version 4.5.1. It bombs on the following: That's very weird and looks a bug with "make", building the executable "patch" when the dependencies aren't built. Does the problem persist if you simply try "make" again? -- 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] sage build FAIL - An error occurred while installing patch-2.5.9.p2
Hi, Trying to build sage on an Intel x86_64 4 core cpu based computer running Fedora 14. GCC version 4.5.1. It bombs on the following: gcc -o patch -g -O2 addext.o argmatch.o backupfile.o basename.o dirname.o getopt.o getopt1.o inp.o maketime.o partime.o patch.o pch.o quote.o quotearg.o quotesys.o util.o version.o xmalloc.o gcc: addext.o: No such file or directory gcc: argmatch.o: No such file or directory gcc: backupfile.o: No such file or directory gcc: basename.o: No such file or directory gcc: dirname.o: No such file or directory gcc: getopt.o: No such file or directory gcc: getopt1.o: No such file or directory gcc: inp.o: No such file or directory gcc: maketime.o: No such file or directory gcc: partime.o: No such file or directory gcc: patch.o: No such file or directory gcc: pch.o: No such file or directory gcc: quote.o: No such file or directory gcc: quotearg.o: No such file or directory gcc: quotesys.o: No such file or directory gcc: util.o: No such file or directory gcc: version.o: No such file or directory gcc: xmalloc.o: No such file or directory gcc: no input files make[2]: *** [patch] Error 1 Error building GNU patch real0m10.426s user0m2.512s sys0m3.755s sage: An error occurred while installing patch-2.5.9.p2 My entire log is attached. Hope you guys can help. Sage sounds pretty great. Thanks, Sean -- 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 patch-2.5.9.p2.log Description: Binary data
