#13445: Cuspidal subspace of modular forms over finite field contains forms that
are not cuspidal
---------------------------------+---------------------------
Reporter: mderickx | Owner: craigcitro
Type: defect | Status: new
Priority: major | Milestone: sage-5.11
Component: modular forms | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Dependencies:
Stopgaps: |
---------------------------------+---------------------------
Comment (by chapoton):
Looking at sage/modular/modform/cuspidal_submodule.py, it seems that the
cuspidal submodule is just defined by
* computing its dimension d
* taken the first d vectors of the basis of modular forms
So it implicitly assumes that the cusp forms come first in the listing of
the basis.
On the other hand, the "is_cuspidal" method just checks that the element
is in the cuspidal submodule. Is there a way to really check if something
is cuspidal ?
--
Ticket URL: <http://trac.sagemath.org/ticket/13445#comment:1>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-trac.
For more options, visit https://groups.google.com/groups/opt_out.
