Re: [sage-devel] Re: bug in modular/pollack_stevens/modsym.py --> stopgap

2017-05-15 Thread Vincent Delecroix
Thanks Marc for your answer! It would be very useful to have explicitely mentioned in the documentation of these functions that the result is not constant over time (ie explain what consistency the user is supposed to expect). Looking at the name "is_ordinary", I do not suspect it to be depende

[sage-devel] Re: bug in modular/pollack_stevens/modsym.py --> stopgap

2017-05-15 Thread Marc Masdeu
The function ps_modsym_from_simple_modsym_space calls internally a randomized method from modular symbols (dual_eigenvector). Here is a snippet of code that also returns different answers depending on the seed (on a fresh session, since dual_eigenvector gets cached). f = Newforms(32, 8, names='