[sage-support] Re: Question about polynomial rings and their fraction fields

2010-09-26 Thread John Cremona
Wow, I had never heard of inject_on() until now. Amazing! It looks as if it has been in Sage for a long time, since its docstring says Add code ... and send William Stein a patch! John On Sep 26, 2:16 am, Robert Bradshaw rober...@math.washington.edu wrote: On Sat, Sep 25, 2010 at 10:51 AM,

[sage-support] Re: subsop

2010-09-26 Thread TianWei
On Sep 24, 7:17 am, Julius juliuslul...@gmail.com wrote: Hi list, I wonder if there is any command similar to subsop in maple (www.maplesoft.com/support/help/Maple/view.aspx?path=subsop). There is an operands(), but I don't see how substitutions can be made from it. Antonio This is all

[sage-support] Re: subsop

2010-09-26 Thread Yann
On Sep 24, 4:17 pm, Julius juliuslul...@gmail.com wrote: Hi list, I wonder if there is any command similar to subsop in maple (www.maplesoft.com/support/help/Maple/view.aspx?path=subsop). There is an operands(), but I don't see how substitutions can be made from it. Antonio Hi, here is a