Changes between Initial Version and Version 12 of Ticket #15381


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Timestamp:
11/28/17 09:21:09 (23 months ago)
Author:
jdemeyer
Comment:

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  • Ticket #15381

    • Property Cc SimonKing nthiery mmezzarobba added
    • Property Milestone changed from sage-6.1 to sage-6.4
    • Property Summary changed from gens() can mean both module and algebra generators, confusing morphism.pyx to Comparison of morphisms assumes that a Morphism is determined by its action on gens()
    • Property Dependencies changed from to #10963
    • Property Stopgaps changed from to wrongAnswerMarker
  • Ticket #15381 – Description

    initial v12  
     1Counterexamples:
     2{{{
     3sage: from sage.categories.morphism import SetMorphism
     4sage: f = SetMorphism(Hom(QQ, QQ, Sets()), numerator)
     5sage: f.is_identity()
     6True
     7}}}
     8and
    19{{{
    210sage: D3 = GroupAlgebra(DihedralGroup(3), QQ)
     
    816
    917Of course, `g` is not the identity. The culprit is here:
    10 
    1118{{{
    1219            gens = domain.gens()