Abstract
In this article we discuss the question of existence of Hamiltonian cycles in the undirected power graph of a group, where power graph is defined as a graph with the group as the vertex set and edges between two distinct elements whenever one is a power of the other. We describe a new structural description of power graphs through vertex weighted directed graphs. We develop the theory of weighted Hamiltonian paths in a weighted graph. We solve the Hamiltonian question completely for power graphs of a class of finite abelian groups, namely \(({\mathbb {Z}}_p)^n \times ({\mathbb {Z}}_q)^m\) where p, q are distinct primes.
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Mukherjee, H. Hamiltonian cycles of power graph of abelian groups. Afr. Mat. 30, 1025–1040 (2019). https://doi.org/10.1007/s13370-019-00699-8
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DOI: https://doi.org/10.1007/s13370-019-00699-8