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arXiv · 1705.00191

Graham's pebbling conjecture on Cartesian product of the middle graphs of even cycles

Zheng-Jiang Xia·Yong-Liang Pan·Jun-Ming Xu·Xi-Ming Cheng
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Abstract

A pebbling move on a graph $G$ consists of taking two pebbles off one vertex and placing one on an adjacent vertex. The pebbling number of a graph $G$, denoted by $f(G)$, is the least integer $n$ such that, however $n$ pebbles are located on the vertices of $G$, we can move one pebble to any vertex by a sequence of pebbling moves. Let $M(G)$ be the middle graph of $G$. For any connected graphs $G$ and $H$, Graham conjectured that $f(G\times H)\leq f(G)f(H)$. In this paper, we give the pebbling number of some graphs and prove that Graham's conjecture holds for the middle graphs of some even cycles.

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Zheng-Jiang Xia, Yong-Liang Pan, Jun-Ming Xu, Xi-Ming Cheng. 2017-04-29. Graham's pebbling conjecture on Cartesian product of the middle graphs of even cycles. https://arxiv.org/abs/1705.00191

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