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jack
 Post subject: get number of ring paramter
PostPosted: Mon Apr 14, 2014 12:07 pm 
Hello,

for a ring variable it is possible to get its number using rvar:
Code:
ring rng =(0,a,b),(x,y,z),dp;
rvar(x);
// 1
rvar(y);
// 2


Is the same possible for parameters (here 'a','b') ?


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malex
 Post subject: Re: get number of ring paramter
PostPosted: Wed Apr 16, 2014 6:00 am 

Joined: Tue Jun 23, 2009 10:33 pm
Posts: 51
Location: Kaiserslautern
Code:
> ring rng =(0,a,b),(x,y,z),dp; def R = ring(ringlist(basering)[1]); setring R; R;
//   characteristic : 0
//   number of vars : 2
//        block   1 : ordering lp
//                  : names    a b
//        block   2 : ordering C
> rvar(a);
1
> rvar(b);
2


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Jack
 Post subject: Re: get number of ring paramter
PostPosted: Sat Apr 19, 2014 3:28 pm 
Doh!

It seems I have to go back to school and learn to ask precise questions.



Second trial:
is there a function in Singular interpreter language which takes as an argument a ring parameter variable
and returns its corresponding index?

If not, I would like to open a feature request for that.


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