Hmmm... I don't see anything from a quick read of the code why this is going wrong. I'll take a more detailed look today.
Best, Travis On Friday, November 21, 2014 5:55:51 AM UTC-8, Andrew wrote: > > I'm currently going around in circles with some CombinatorialFreeModule > woes. The previous code for these "alternating seminormal" forms works, but > in order to cope with the many variations of seminormal representations > that I decided to implement, I've have had to jazz things up quite a lot. > Now my basic class structure looks something like this: > > from sage.combinat.free_module import CombinatorialFreeModule > from sage.rings.polynomial.polynomial_ring_constructor import > PolynomialRing > > class A(CombinatorialFreeModule): > def __init__(self, base_ring, basis_keys, prefix='a', **kwargs): > super(A,self).__init__(base_ring, basis_keys, prefix=prefix, ** > kwargs) > > class Element(CombinatorialFreeModule.Element): > pass > > class B(A): > def __init__(self, base_ring, basis_keys, prefix='b', **kwargs): > super(B,self).__init__(base_ring, basis_keys, prefix=prefix, ** > kwargs) > > class C(B): > def __init__(self, shape, prefix='c', **kwargs): > base_ring=PolynomialRing(Integers(), 'q') > super(B,self).__init__(base_ring, shape.standard_tableaux(), > prefix=prefix, **kwargs) > > This simplified code works fine. For example, > > sage: C(Partition([3,2])).an_element() > 2*c[[[1, 2, 5], [3, 4]]] + 3*c[[[1, 3, 4], [2, 5]]] + 2*c[[[1, 3, 5], [2, > 4]]] > > Unfortunately my real code does not work, having issues like: > > sage: rep=SeminormalRepresentation([2,1]); rep > SeminormalRepresentation([2,1]) # seems to work OK > sage: rep.an_element() # try to construct an element > <repr(<sage.algebras.iwahori_hecke_algebras. > iwahori_hecke_algebra_representations. > SeminormalRepresentation_with_category.element_class at 0x119a88c80>) > failed: AttributeError: 'SeminormalRepresentation_with_category' object > has no attribute '_prefix'> > sage: rep(StandardTableau([[1,2],[3]])) > AttributeError Traceback (most recent call last > ) > ... > AttributeError: 'SeminormalRepresentation_with_category' object has no > attribute '_basis_keys' > > Does anyone have an idea of what is going wrong. Part of the issue might > be all of the super calls, as perhaps some of the the classes higher up are > not using super, but I tried taking out all ofthe super calls and, > instead, explicitly calling the previous classes (they are linearly > ordered), and unfortunately this doesn't help. > > For anyone feeling masochistic, the full code is at trac:17303 > <http://trac.sagemath.org/ticket/17303> (it uses 6.5beta0) > > Andrew > -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-combinat-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-combinat-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-combinat-devel. For more options, visit https://groups.google.com/d/optout.
