Endomorphism seminear-rings of Brandt semigroups
نویسندگان
چکیده
We consider the endomorphisms of a Brandt semigroup Bn, and the semigroup of mappings E(Bn) that they generate under pointwise composition. We describe all the elements of this semigroup, determine Green’s relations, consider certain special types of mapping which we can enumerate for each n, and give complete calculations for the size of E(Bn) for small n. AMS 2000 Mathematics subject classification: Primary 16Y30 Secondary 16Y60, 20M10
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تاریخ انتشار 2009