Ticket #1127 (new defect)

Opened 1 year ago

Last modified 4 weeks ago

modularSymbol complement fails for E=128a

Reported by: syazdani Assigned to: craigcitro
Priority: major Milestone: sage-3.4
Component: modular forms Keywords:
Cc: robertwb

Description

The following code raises the following exception: 

sage: E=EllipticCurve("128a")
sage: ME=E.modular_symbol_space()
sage: ME.complement()
---------------------------------------------------------------------------
<type 'exceptions.RuntimeError'>          Traceback (most recent call last)

/net/mathserv/1/home/syazdani/research/programs/<ipython console> in <module>()

/home/syazdani/sage/local/lib/python2.5/site-packages/sage/modular/hecke/submodule.py in complement(self, bound)
    200         else:
    201             # failed
--> 202             raise RuntimeError, "Computation of complementary space failed (cut down to rank %s, but should have cut down to rank %s)."%(V.rank(), self.rank())
    203
    204

<type 'exceptions.RuntimeError'>: Computation of complementary space failed (cut down to rank 18, but should have cut down to rank 1).

Change History

11/07/2007 02:35:21 PM changed by mabshoff

  • milestone set to sage-2.9.

12/18/2007 01:11:26 AM changed by mabshoff

  • milestone changed from sage-2.10 to sage-2.9.1.

12/18/2007 01:11:46 AM changed by mabshoff

This remains unfixed in Sage 2.9.

Cheers,

Michael

01/19/2008 06:59:34 PM changed by mabshoff

And it is still open in Sage 2.10.

Cheers,

Michael

06/25/2008 11:53:19 PM changed by mabshoff

  • owner changed from was to craigcitro.

And it is still broken in Sage 3.0.3. This looks like a job for Craig Citro :)

Cheers,

Michael

11/02/2008 08:27:56 AM changed by mabshoff

Could #2535 be related?

Cheers,

Michael

12/11/2008 06:16:59 PM changed by robertwb

  • cc set to robertwb.