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bug in old_subspace of hecke module in some edge cases #10664

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williamstein opened this issue Jan 20, 2011 · 5 comments
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bug in old_subspace of hecke module in some edge cases #10664

williamstein opened this issue Jan 20, 2011 · 5 comments
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@craigcitro
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c: modular forms p: minor / 4 t: bug
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sage-4.6.2

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@williamstein
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sage: ModularSymbols(DirichletGroup(42)[7], 6, sign=1).old_subspace(3)
BOOM!

Component: modular forms

Author: Fredrik Stroemberg

Reviewer: William Stein

Merged: sage-4.6.2.alpha2

Issue created by migration from https://trac.sagemath.org/ticket/10664
@williamstein williamstein added this to the sage-4.6.2 milestone Jan 20, 2011
@williamstein
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comment:1

The fix is a simple addition of a few lines to hecke/ambient_module.py. Fredrik Stroemberg found this and sent me the fix. So I'm refereeing this positively.

@williamstein
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Author: Fredrik Stroemberg

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comment:2

Attachment: trac_10664.patch.gz

@williamstein
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Reviewer: William Stein

@jdemeyer
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Merged: sage-4.6.2.alpha2

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c: modular forms p: minor / 4 t: bug
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