[sage-support] Re: using Singular's invariant_ring

2007-11-25 Thread Martin Albrecht
@Martin Albrecht: - Is there a reasonable way to fix this in the interface? Hi, the 'trivial' way to fix it, is to implement a Python function for SinguleElement called invariant_ring which calls the Singular function, parses the output and returns a tuple. If you call A.invariant_ring the

[sage-support] Re: using Singular's invariant_ring

2007-11-25 Thread Simon King
Hi David, On Nov 24, 10:38 pm, David Joyner [EMAIL PROTECTED] wrote: The commands at http://www.singular.uni-kl.de/Manual/latest/sing_1083.htm#SEC1142 are a good example to start. In my previous post, i explained how one might use invariant_ring (for getting a Hironaka decomposition) or

[sage-support] Re: using Singular's invariant_ring

2007-11-25 Thread William Stein
On Nov 25, 2007 3:27 AM, Martin Albrecht [EMAIL PROTECTED] wrote: @Martin Albrecht: - Is there a reasonable way to fix this in the interface? Hi, the 'trivial' way to fix it, is to implement a Python function for SinguleElement called invariant_ring which calls the Singular function,

[sage-support] Re: using Singular's invariant_ring

2007-11-25 Thread David Joyner
On Nov 25, 2007 4:29 PM, William Stein [EMAIL PROTECTED] wrote: On Nov 25, 2007 3:27 AM, Martin Albrecht [EMAIL PROTECTED] wrote: @Martin Albrecht: - Is there a reasonable way to fix this in the interface? Hi, the 'trivial' way to fix it, is to implement a Python function for

[sage-support] Re: using Singular's invariant_ring

2007-11-24 Thread Simon King
Dear David, On Nov 24, 10:38 pm, David Joyner [EMAIL PROTECTED] wrote: snip sage: R = singular.ring(0, '(x,y,z)', 'dp') sage: A = singular.matrix(3,3,'0,1,0,-1,0,0,0,0,-1') sage: singular.eval('LIB finvar.lib;') Now, I'm stuck. Everything I try returns an error. For example, I expected