Displaying similar documents to “Factor-union representation of phenotype systems.”

The semiring of 1-preserving endomorphisms of a semilattice

Jaroslav Ježek, Tomáš Kepka (2009)

Czechoslovak Mathematical Journal

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We prove that the semirings of 1-preserving and of 0,1-preserving endomorphisms of a semilattice are always subdirectly irreducible and we investigate under which conditions they are simple. Subsemirings are also investigated in a similar way.