Article in press
Authors:
Jan Ekstein
DEPARTMENT OF MATHEMATICS
University of West Bohemia
Univerzitní 2732/8
301 00 Pilsen
email: ekstein@kma.zcu.cz
Title:
Hamiltonian properties in generalized lexicographic products
PDFSource:
Discussiones Mathematicae Graph Theory
Received: 2023-05-15 , Revised: 2023-10-25 , Accepted: 2023-10-25 , Available online: 2023-11-14 , https://doi.org/10.7151/dmgt.2527
Abstract:
The lexicographic product $G[H]$ of two graphs $G$ and $H$ is obtained from $G$
by replacing each vertex with a copy of $H$ and adding all edges between any
pair of copies corresponding to adjacent vertices of $G$. We consider also the
generalized lexicographic product such that we replace each vertex of $G$ with
arbitrary graph on the same number of vertices. We present sufficient and
necessary conditions for traceability, hamiltonicity and hamiltonian
connectivity of $G[H]$ if $G$ is a path and hence we improved and extended
results in [M. Kriesell, A note on Hamiltonian cycles in lexicographical
products, J. Autom. Lang. Comb. 2 (1997) 135–138].
Keywords:
lexicographic products, hamiltonian cycles and paths
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