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Fault Diameter of Recursive Circulant $G(2^{m},2^{k})$  

김희철 (한국외국어대학교 컴퓨터 및 정보통신공학부)
정호영 (한국외국어대학교 컴퓨터공학과)
박정흠 (가톨릭대학교 컴퓨터·전자공학부)
Abstract
The fault diameter of a graph G is the maximum of lengths of the shortest paths between all two vertices when there are $\chi$(G) - 1 or less faulty vertices, where $\chi$(G) is connectivity of G. In this paper, we analyze the fault diameter of recursive circulant $G(2^m,2^k)$ with $k{\geq}3$. Let $ dia_{m.k}$ denote the diameter of $G(2^m,2^k)$. We show that if $2{\leq}m,2{\leq}k, the fault diameter of $G(2{\leq}m,2{\leq}k)$ is equal to $2^m-2$, and if m=k+1, it is equal to $2^k-1$. It is also shown that for m>k+1, the fault diameter is equal to di a_$m{\neq}1$(mod 2k); otherwise, it is less than or equal to$dia_{m.k+2}$.
Keywords
Fault tolerance; Diameter; Fault diameter; Recursive circulants;
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