[sage-support] Re: how to factorize an expression with constant variables ?

2012-09-20 Thread mazkime
sorry for the late answer. After some investigations on the internet, I did not find any convenient solution. My concern being on polynomials, I ended up doing some copy/paste of my expressions and working in another window with a polynomial ring defined the following way : R.A,B = QQ[]

[sage-support] Re: Jacobi sn

2012-09-20 Thread Rafael
Thank you for your reply. I get: sage: maxima.version() '5.26.0' I searched the Maxima change logs at: http://code.metager.de/source/xref/maxima/ChangeLog-5.27 (and also for 5.28) and did not see any direct changes to elliptic functions. But I am glad to see that they seem to be working

Re: [sage-support] Strange results with multivariate resultants

2012-09-20 Thread Julian Rüth
* Georgi Guninski gunin...@guninski.com [2012-09-19 07:34:46 +0300]: According to wikipedia [1] the multivariate resultant or Macaulay's resultant of n homogeneous polynomials in n variables is a polynomial in their coefficients that vanishes when they have a common non-zero solution My

[sage-support] Re: Problem with sagecell server installation

2012-09-20 Thread ma...@mendelu.cz
Dne středa, 19. září 2012 7:40:02 UTC+2 ma...@mendelu.cz napsal(a): I have the following problem when running web_server.py sagecell@sagecell:~/sage-5.3/devel/sagecell$ ../../sage web_server.py Computer 3b203f84-d093-43f4-aade-47e371970bd3 did not respond, connecting failed! The

Re: [sage-support] Strange results with multivariate resultants

2012-09-20 Thread luisfe
On Wednesday, September 19, 2012 6:34:52 AM UTC+2, Georgi Guninski wrote: Hi, I may be missing something, but the resultant = 1 confuses me. According to wikipedia [1] the multivariate resultant or Macaulay's resultant of n homogeneous polynomials in n variables is a polynomial in

Re: [sage-support] Strange results with multivariate resultants

2012-09-20 Thread luisfe
On Thursday, September 20, 2012 1:05:56 PM UTC+2, Georgi Guninski wrote: pari disagrees with sage and maxima agrees with it. which way is it? maxima session: (%i12) p1:(x2)*(x3-x4);p2:x2*(x3-2*x4); (%i14) resultant(p1,p2,x1); (%o14) 1 In this

Re: [sage-support] Strange results with multivariate resultants

2012-09-20 Thread Dima Pasechnik
On Thursday, 20 September 2012 19:05:56 UTC+8, Georgi Guninski wrote: pari disagrees with sage and maxima agrees with it. which way is it? maxima session: (%i12) p1:(x2)*(x3-x4);p2:x2*(x3-2*x4); (%i14) resultant(p1,p2,x1); (%o14) 1 (%i15)

Re: [sage-support] Strange results with multivariate resultants

2012-09-20 Thread Georgi Guninski
Thanks all for the replies. Pari devs acknowledged their bug and fixed it in trunk here: http://pari.math.u-bordeaux.fr/archives/pari-dev-1209/msg00034.html On Thu, Sep 20, 2012 at 09:45:14AM -0700, Dima Pasechnik wrote: On Thursday, 20 September 2012 19:05:56 UTC+8, Georgi Guninski