Re: GroebnerBasis never finishes
- To: mathgroup at smc.vnet.net
- Subject: [mg95140] Re: GroebnerBasis never finishes
- From: dh <dh at metrohm.com>
- Date: Wed, 7 Jan 2009 04:15:10 -0500 (EST)
- References: <gjv794$p4h$1@smc.vnet.net>
Hi Andrew,
in V7 it executes very fast (50mSec). Could it be that one of your
variables or parameters already had some value? Try again with a fresh
Kernel.
Daniel
AndrewTamra wrote:
> Following groebner basis took more than an hour and did not complete. I had to abort it. Any ideas? Thanks.
>
> GroebnerBasis[
> {
> 2401*t1*t3 + 2401*t2*t3 - 2401*t3^2 - 245*t1*v2 - 245*t2*v2 + 490*t3*v2 - 25*v2^2,
> 4802*t1*t3 - 2401*t3^2 - 490*t1*v2 + 490*t3*v2 - 25*v2^2,
> -49*t*t3 + 49*t1*t3 + 5*t*v2 - 5*t1*v2,
> 10*H - 49*t3^2 - 49*t4^2 + 98*t4*t5 - 49*t5^2 - 10*t4*v2 + 10*t5*v2 - 10*w1,
> -10*H - 49*t3^2 - 49*t4^2 + 98*t4*t6 - 49*t6^2 + 10*t3*v2 - 10*t4*v2 + 10*t6*v2 - 10*w2
> },
> {t1,t2,t3,t4,t5,t6,v2,w1,w2,H},
> MonomialOrder -> Lexicographic]
>