| Summary: | 碩士 === 國立交通大學 === 資訊科學與工程研究所 === 94 === Xu et al. showed that for any set of faulty edges F of an n-dimensional hypercube Qn with |F|≦n-1, each edge of Qn-F lies on a cycle of every even length from 6 to 2n, n≧4, provided not all edges in F are incident with the same vertex. In this paper, we find that under similar condition, the number of faulty edges can be much greater and the same result still holds. More precisely, we show that, for up to |F|=2n-5 faulty edges, each edge of the faulty hypercube Qn-F lies on a cycle of every even length from 6 to 2n with each vertex having at least two healthy edges adjacent to it, for n≧3. Moreover, this result is optimal in the sense that the result can not be guaranteed, if there are 2n-4 faulty edges.
|
|---|
