dimensions of modular forms spaces for Gamma(N) is slow

[williamstein]

sage: dimension_cusp_forms(Gamma(11))
[hangs forever]

This has now been fixed as a consequence of #10546. Release manager: please close as fixed.

Component: modular forms

Keywords: sd51

Reviewer: David Loeffler, Alex Ghitza

Issue created by migration from https://trac.sagemath.org/ticket/6860

[williamstein]

comment:1

Wait, I'm just impatient, since:

sage: dimension_cusp_forms(Gamma(11))
26

So I'm changing this to an enhancement, since I think this should be fast.

[loefflerd]

comment:2

This has now been fastified:

sage: %time dimension_cusp_forms(Gamma(10^28+731))                             
CPU times: user 0.04 s, sys: 0.02 s, total: 0.06 s
Wall time: 1.54 s
36274370885528165103530592700784546931709800073501194539717685491542679896172544001

(and most of that is the time taken to factor the level). I propose closing this as fixed.

[aghitza]

Author: David Loeffler