When an elliptic curve is created the code in the __init__ function in ell_generic.py (lines 164-5) do cause a multivariate polynomial ring to be created. In this case it's a new ring each time as the base field is always a new field.
The reason this is done is that the elliptic curve class derives from the plane curve class, which is created from a homogeneous polynomial in three variables. However at least 95% (at a guess) of elliptic curve functionality does not depend at all on the base class (one exception is checking that points lie on the curve, and even that was not the case until the recent patch by Alex Ghitza). So, when you create a large number of curves over different fields you do also create all these rings. However, in the example in the original post, these elliptic curves do not remain in scope, so I don't know why the rings are not garbage-collected away. John On May 1, 10:00 pm, mabshoff <michael.absh...@mathematik.uni- dortmund.de> wrote: > On May 1, 12:12 pm, Robert Bradshaw <rober...@math.washington.edu> > wrote: > > <SNIP> > > > > No that I have a clue how to debug this, so I will poke RobertWB - I > > > am sure he has nothing better to do that to dive into this problem and > > > will be happy to debug this ;) > > > Yep, I bet coercion is leaking rings. I'll look at this during Sage > > days, if not sooner. > > Thanks, I ought to look over your shoulder to get an idea on how to > attack those leaks in the future :) > > > - Robert > > Cheers, > > Michael --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
