#9056: Add the category of SemiRings with an example : NonNegativeIntegers()
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Reporter: nborie | Owner: nborie
Type: enhancement | Status: new
Priority: major | Milestone:
Component: categories | Keywords: semiring
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Description changed by nborie:
Old description:
> All is in the title, we want :
>
> {{{
> sage: SemiRings()
> sage: Category of semi rings
> sage: NN = NonNegativeIntegers()
> sage: NN.category()
> Category of semi rings
> }}}
New description:
All is in the title, we want :
{{{
sage: SemiRings()
sage: Category of semi rings
sage: NN = NonNegativeIntegersSemiRing()
sage: NN.category()
Join of Category of semirings and Category of infinite enumerated sets
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9056#comment:1>
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