#18265: Axioms for semigroups: L,R,J,H-trivial, aperiodic
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Reporter: nthiery | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-6.7
Component: algebra | Resolution:
Keywords: | Merged in:
Authors: Nicolas M. Thiéry | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Description changed by nthiery:
Old description:
> This ticket defines the usual Green axioms for semigroups, and provides
> stubs for the corresponding categories. This is a first step toward
> #18001.
New description:
This ticket defines the usual Green axioms for semigroups, and provides
stubs for the corresponding categories:
{{{
sage: Semigroups().LTrivial()
Category of ltrivial semigroups
sage: Semigroups().LTrivial().RTrivial()
Category of jtrivial semigroups
sage: Semigroups().HTrivial().Finite()
Category of finite aperiodic semigroups
sage: Semigroups().Commutative().RTrivial()
Category of commutative jtrivial semigroups
}}}
This is a first step toward #18001.
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Ticket URL: <http://trac.sagemath.org/ticket/18265#comment:1>
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