Kernel of a semi-group
From HandWiki
The smallest two-sided ideal in the semi-group. Not every semi-group has a kernel.
Regarding properties of kernels of semi-groups and semi-groups that have kernels, see Minimal ideal; Archimedean semi-group; Wreath product of semi-groups; and Topological semi-group.
References
| [1] | A.H. Clifford, G.B. Preston, "Algebraic theory of semi-groups" , Amer. Math. Soc. (1961–1967) |
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