Helloooooooo !!!
What happens if you add facade=True ?
>
It works ! ;-)
sage: p = [1,2,3,4,5]
sage: P = Poset( (p, lambda x,y:x<y ) )
sage: map(type,P)
[<class
'sage.combinat.posets.elements.FinitePoset_with_category.element_class'>,
<class
'sage.combinat.posets.elements.FinitePoset_with_category.element_class'>,
<class
'sage.combinat.posets.elements.FinitePoset_with_category.element_class'>,
<class
'sage.combinat.posets.elements.FinitePoset_with_category.element_class'>,
<class
'sage.combinat.posets.elements.FinitePoset_with_category.element_class'>]
sage: P = Poset( (p, lambda x,y:x<y ) , facade = True)
sage: map(type,P)
[<type 'sage.rings.integer.Integer'>, <type 'sage.rings.integer.Integer'>,
<type 'sage.rings.integer.Integer'>, <type 'sage.rings.integer.Integer'>,
<type 'sage.rings.integer.Integer'>]
I would personnally expect this to be the default behaviour, especially
when the documentation of Poset says nothing about what the facade argument
means nor that it could have any effect on such problems ^^;;;
Thank you very much though, at least now my code works :-)
Nathann
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