[sage-support] Re: zn_poly-09.p09 error on Mac during upgrade to 5.7.

2013-02-23 Thread John H Palmieri
On Saturday, February 23, 2013 5:57:48 PM UTC-8, kcrisman wrote: > > > > On Saturday, February 23, 2013 4:00:54 PM UTC-5, Robert Gross wrote: >> >> Hi, >> >> I upgraded to 5.7, and I get an error from zn_poly-0.9.p9 when running >> the quick self-test: nuss_mul()... FAIL!. >> >> This is on a

[sage-support] Re: zn_poly-09.p09 error on Mac during upgrade to 5.7.

2013-02-23 Thread kcrisman
On Saturday, February 23, 2013 4:00:54 PM UTC-5, Robert Gross wrote: > > Hi, > > I upgraded to 5.7, and I get an error from zn_poly-0.9.p9 when running the > quick self-test: nuss_mul()... FAIL!. > > This is on a Mac OX 10.6. I did manage to install the rest of sage-5.7, > and I can start s

[sage-support] zn_poly-09.p09 error on Mac during upgrade to 5.7.

2013-02-23 Thread Robert Gross
Hi, I upgraded to 5.7, and I get an error from zn_poly-0.9.p9 when running the quick self-test: nuss_mul()... FAIL!. This is on a Mac OX 10.6. I did manage to install the rest of sage-5.7, and I can start sage successfully, so I can try to test anything that anyone can suggest to pinpoint the p

[sage-support] Re: How to convert a symbolic expression to a multivariate polynomial efficiently?

2013-02-23 Thread luisfe
I think you have more chances if you work in QQ['a']['t1,t2']. In any case, it seems that it is better to convert to your ring using P(f.polynomial(QQ)) than performing substitutions. sage: K=QQ['a']['t1,t2'] sage: K1=SR['t1,t2'] sage: f=SR(K.random_elemen

[sage-support] How to know which module or program is used in backstage ?

2013-02-23 Thread Christophe BAL
Hello, is it possible to know which module or program is used in backstage. Why ? As a french teacher, I'm sometimes tortured so as to inevitably use Windows. [?] So I would like to directly use Python packages rather than a virtual machine if it is possible. Best regards. Christophe BAL -- You

[sage-support] How to convert a symbolic expression to a multivariate polynomial efficiently?

2013-02-23 Thread marco nijmeijer
Suppose I have a symbolic expression f( t1, t2) which can be interpreted as a multivariate polynomial in t1 and t2., e.g. a = var('a') f(t1,t2) = a*t1+t2 To make this clear to Sage I say P.=PolynomialRing(SR) g = f.polynomial(QQ).subs(t1=p1,t2=p2) This works but becomes very slow when the sy