Opened 9 years ago
Closed 8 years ago
#13212 closed defect (fixed)
discriminant of Hecke algebra is broken
Reported by: | AlexGhitza | Owned by: | craigcitro |
---|---|---|---|
Priority: | major | Milestone: | sage-5.12 |
Component: | modular forms | Keywords: | discriminant hecke beginner sd51 |
Cc: | Merged in: | sage-5.12.beta2 | |
Authors: | Alejandro Argaez | Reviewers: | Alex Ghitza |
Report Upstream: | N/A | Work issues: | |
Branch: | Commit: | ||
Dependencies: | Stopgaps: |
Description
---------------------------------------------------------------------- | Sage Version 5.0, Release Date: 2012-05-14 | | Type notebook() for the GUI, and license() for information. | ---------------------------------------------------------------------- sage: H = CuspForms(1, 24).hecke_algebra() sage: H.discriminant() --------------------------------------------------------------------------- AttributeError Traceback (most recent call last) /home/ghitza/<ipython console> in <module>() /opt/sage-5.0/local/lib/python2.7/site-packages/sage/modular/hecke/algebra.pyc in discriminant(self) 523 except AttributeError: 524 pass --> 525 basis = self.basis() 526 d = len(basis) 527 if d <= 1: /opt/sage-5.0/local/lib/python2.7/site-packages/sage/modular/hecke/algebra.pyc in basis(self) 472 pass 473 level = self.level() --> 474 bound = self.__M.hecke_bound() 475 dim = self.__M.rank() 476 if dim == 0: /opt/sage-5.0/local/lib/python2.7/site-packages/sage/structure/parent.so in sage.structure.parent.Parent.__getattr__ (sage/structure/parent.c:6732)() /opt/sage-5.0/local/lib/python2.7/site-packages/sage/structure/parent.so in sage.structure.parent.getattr_from_other_class (sage/structure/parent.c:3248)() AttributeError: 'CuspidalSubmodule_level1_Q_with_category' object has no attribute 'hecke_bound'
Attachments (1)
Change History (7)
comment:1 Changed 8 years ago by
- Keywords beginner sd51 added
comment:2 Changed 8 years ago by
Correction: what I posted above is wrong -- this would be dangerous and introduce some odd bugs! Better would be to move the definition of hecke_bound
in sage/modular/modsym/subspace.py
to sage/modular/hecke/submodule.py
. That is, I think, the minimally invasive way to make Hecke algebras of cuspidal modform spaces work properly.
comment:3 Changed 8 years ago by
- Status changed from new to needs_review
comment:4 Changed 8 years ago by
- Reviewers set to Alex Ghitza
- Status changed from needs_review to positive_review
comment:5 Changed 8 years ago by
- Milestone changed from sage-5.11 to sage-5.12
comment:6 Changed 8 years ago by
- Merged in set to sage-5.12.beta2
- Resolution set to fixed
- Status changed from positive_review to closed
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This can be corrected in one line by replacing the call to
hecke_bound
withsturm_bound
.