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Endomorphisms of Cayley digraphs of rectangular groups

Srichan Arworn, Boyko Gyurov, Nuttawoot Nupo, Sayan Panma

Abstract


Let Cay(S,A) denote the Cayley digraph of the semigroup S with respect to the set A, where A is any subset of S. The function f:Cay(S,A)Cay(S,A) is called an endomorphism of Cay(S,A) if for each (x,y)E(Cay(S,A)) implies (f(x),f(y))E(Cay(S,A)) as well, where E(Cay(S,A)) is an arc set of Cay(S,A). We characterize the endomorphisms of Cayley digraphs of rectangular groups G×L×R, where the connection sets are in the form of A=K×P×T.


Keywords


Cayley digraphs, rectangular groups, endomorphisms

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