{"title":"由$k$ m$-Cycles生成的置换群上cayley图的距离","authors":"Z. Mostaghim, Mohammad Hossein Ghaffari","doi":"10.22108/TOC.2017.21473","DOIUrl":null,"url":null,"abstract":"In this paper, we extend upon the results of B. Suceavă and R. Stong [Amer. Math. Monthly, 110 (2003) 162–162], which they computed the minimum number of 3-cycles needed to generate an even permutation. Let Ωk,m be the set of all permutations of the form c1c2 · · · ck where ci’s are arbitrary m-cycles in Sn. Suppose that Γ n k,m be the Cayley graph on subgroup of Sn generated by all permutations in Ωk,m. We find a shortest path joining identity and any vertex of Γ n k,m, for arbitrary natural number k, and m = 2, 3, 4. Also, we calculate the diameter of these Cayley graphs. As an application, we present an algorithm for finding a short expression of a permutation as products of given permutations.","PeriodicalId":43837,"journal":{"name":"Transactions on Combinatorics","volume":"6 1","pages":"45-59"},"PeriodicalIF":0.6000,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Distance in cayley graphs on permutation groups generated by $k$ $m$-Cycles\",\"authors\":\"Z. Mostaghim, Mohammad Hossein Ghaffari\",\"doi\":\"10.22108/TOC.2017.21473\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this paper, we extend upon the results of B. Suceavă and R. Stong [Amer. Math. Monthly, 110 (2003) 162–162], which they computed the minimum number of 3-cycles needed to generate an even permutation. Let Ωk,m be the set of all permutations of the form c1c2 · · · ck where ci’s are arbitrary m-cycles in Sn. Suppose that Γ n k,m be the Cayley graph on subgroup of Sn generated by all permutations in Ωk,m. We find a shortest path joining identity and any vertex of Γ n k,m, for arbitrary natural number k, and m = 2, 3, 4. Also, we calculate the diameter of these Cayley graphs. As an application, we present an algorithm for finding a short expression of a permutation as products of given permutations.\",\"PeriodicalId\":43837,\"journal\":{\"name\":\"Transactions on Combinatorics\",\"volume\":\"6 1\",\"pages\":\"45-59\"},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2017-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Transactions on Combinatorics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.22108/TOC.2017.21473\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATHEMATICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Transactions on Combinatorics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.22108/TOC.2017.21473","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATHEMATICS","Score":null,"Total":0}
引用次数: 0
摘要
在本文中,我们扩展了B. suceavei和R. strong [Amer]的结果。数学。每月,110(2003)162-162],他们计算了生成偶数排列所需的最小3循环数。设Ωk,m为c1c2···ck形式的所有排列的集合,其中ci是Sn中的任意m环。设Γ n k,m为Ωk,m中所有排列生成的Sn子群上的Cayley图。对于任意自然数k,m = 2,3,4,我们找到一条最短路径连接单位单位和任意顶点Γ n k,m。同时,我们计算这些Cayley图的直径。作为一个应用,我们提出了一种算法来寻找一个排列的短表达式作为给定排列的乘积。
Distance in cayley graphs on permutation groups generated by $k$ $m$-Cycles
In this paper, we extend upon the results of B. Suceavă and R. Stong [Amer. Math. Monthly, 110 (2003) 162–162], which they computed the minimum number of 3-cycles needed to generate an even permutation. Let Ωk,m be the set of all permutations of the form c1c2 · · · ck where ci’s are arbitrary m-cycles in Sn. Suppose that Γ n k,m be the Cayley graph on subgroup of Sn generated by all permutations in Ωk,m. We find a shortest path joining identity and any vertex of Γ n k,m, for arbitrary natural number k, and m = 2, 3, 4. Also, we calculate the diameter of these Cayley graphs. As an application, we present an algorithm for finding a short expression of a permutation as products of given permutations.