Isbell's zigzag theorem
id:
isbell-s-zigzag-theorem-267-695636
title:
Isbell's zigzag theorem
text:
Isbell's zigzag theorem, a theorem of abstract algebra characterizing the notion of a dominion, was introduced by American mathematician John R. Isbell in 1966. Dominion is a concept in semigroup theory, within the study of the properties of epimorphisms. For example, let U is a subsemigroup of S containing U, the inclusion map U ↪ S is an epimorphism if and only if D o m S = S , furthermore, a map α : S → T is an epimorphism if and only if D o m T = T . The categories of rings and semigroups ar
brand slug:
wiki
category slug:
encyclopedia
description:
Theorem of dominion in abstract algebra
original url:
https://en.wikipedia.org/wiki/Isbell%27s_zigzag_theorem
date created:
date modified:
2024-02-19T16:10:46Z
main entity:
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fields total:
13
integrity:
14