Sung-Jin Cho ; Un-Sook Choi ; Han-Doo Kim ; Yoon-Hee Hwang ; Jin-Gyoung Kim
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60/102 Null Boundary Cellular Automata based expander graphs
dmtcs:2760 -
Discrete Mathematics & Theoretical Computer Science,
January 1, 2010,
DMTCS Proceedings vol. AL, Automata 2010 - 16th Intl. Workshop on CA and DCS
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https://doi.org/10.46298/dmtcs.2760
60/102 Null Boundary Cellular Automata based expander graphsArticle
Authors: Sung-Jin Cho 1; Un-Sook Choi 2; Han-Doo Kim 3; Yoon-Hee Hwang 1; Jin-Gyoung Kim 1
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Sung-Jin Cho;Un-Sook Choi;Han-Doo Kim;Yoon-Hee Hwang;Jin-Gyoung Kim
1 Department of Applied Mathematics
2 Department of Media Engineering
3 School of Computer Aided Science
Expander graphs are useful in the design and analysis of communication networks. Mukhopadhyay et al. introduced a method to generate a family of expander graphs based on nongroup two predecessor single attractor Cellular Automata(CA). In this paper we propose a method to generate a family of expander graphs based on 60/102 Null Boundary CA(NBCA) which is a group CA. The spectral gap generated by our method is maximal. Moreover, the spectral gap is larger than that of Mukhopadhyay et al.