#14161: add a _test_antipode method for Hopf algebras
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       Reporter:  saliola         |         Owner:  sage-combinat
           Type:  enhancement     |        Status:  needs_work   
       Priority:  major           |     Milestone:  sage-5.8     
      Component:  combinatorics   |    Resolution:               
       Keywords:  hopf algebras   |   Work issues:               
Report Upstream:  N/A             |     Reviewers:               
        Authors:  Franco Saliola  |     Merged in:               
   Dependencies:  #14162, #14163  |      Stopgaps:               
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Comment (by saliola):

 The failure only seems to occur when {{{t=1}}}, since the categories seem
 to be correctly defined for other {{{t}}}.

 So the question is whether we should keep this space for {{{t=1}}} as a
 Hopf algebra or put it in the category of bialgebras instead.

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14161#comment:14>
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