[sage-devel] Re: Multivariate polynomial factoring and bug(?)

2016-11-12 Thread 'Bill Hart' via sage-devel
I actually tried taking linear combinations of the coefficients, to see if that would help, after reading the suggestion in a paper. But it turned out to be so much slower than not doing it, that I abandoned it. However, I didn't take the size of the coefficients into account, so I certainly wa

[sage-devel] Re: build system changes should care about py3 ?

2016-11-12 Thread Dima Pasechnik
On Saturday, November 12, 2016 at 8:43:57 PM UTC, Frédéric Chapoton wrote: > > Hello, > > Trying to compile 7.5.b2 with python3 (using export SAGE_PYTHON3=yes), I > got now the following error: > > [sagelib-7.5.beta2] python -c "from sage_setup.autogen.pari import > rebuild; rebuild()" > [sagel

[sage-devel] build system changes should care about py3 ?

2016-11-12 Thread Frédéric Chapoton
Hello, Trying to compile 7.5.b2 with python3 (using export SAGE_PYTHON3=yes), I got now the following error: [sagelib-7.5.beta2] python -c "from sage_setup.autogen.pari import rebuild; rebuild()" [sagelib-7.5.beta2] sys:1: RuntimeWarning: not adding directory '' to sys.path since it's writable

[sage-devel] Re: Multivariate polynomial factoring and bug(?)

2016-11-12 Thread parisse
Le samedi 12 novembre 2016 08:16:41 UTC+1, Bill Hart a écrit : > > > > > I wonder if it is sometimes worth taking the gcd G of the leading > coefficients of the original primitive polynomials and then taking the gcd > H of that with the leading coefficient L of the result of the psr process, >

[sage-devel] Re: Multivariate polynomial factoring and bug(?)

2016-11-12 Thread Dima Pasechnik
On Saturday, November 12, 2016 at 4:00:15 PM UTC, Ralf Stephan wrote: > > Sorry for hijacking. Do you know if there exists a (more) efficient > multivar poly factoring algorithm (than the general one) for factors > linear in the variables, and coefficients in ZZ? Maybe a geometrical > method usin

[sage-devel] Re: Multivariate polynomial factoring and bug(?)

2016-11-12 Thread Ralf Stephan
Sorry for hijacking. Do you know if there exists a (more) efficient multivar poly factoring algorithm (than the general one) for factors linear in the variables, and coefficients in ZZ? Maybe a geometrical method using lines? Regards, -- You received this message because you are subscribed to th