首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Rainbow matchings and Hamilton cycles in random graphs
Authors:Deepak Bal  Alan Frieze
Institution:1. Department of Mathematics, Miami University, Oxford, Ohio;2. Department of Mathematical Sciences, Carnegie Mellon University, Pittsburgh, Pennyslvania
Abstract:Let urn:x-wiley:10429832:media:rsa20594:rsa20594-math-0001 be drawn uniformly from all m‐edge, k‐uniform, k‐partite hypergraphs where each part of the partition is a disjoint copy of urn:x-wiley:10429832:media:rsa20594:rsa20594-math-0002. We let urn:x-wiley:10429832:media:rsa20594:rsa20594-math-0003 be an edge colored version, where we color each edge randomly from one of urn:x-wiley:10429832:media:rsa20594:rsa20594-math-0004 colors. We show that if urn:x-wiley:10429832:media:rsa20594:rsa20594-math-0005 and urn:x-wiley:10429832:media:rsa20594:rsa20594-math-0006 where K is sufficiently large then w.h.p. there is a rainbow colored perfect matching. I.e. a perfect matching in which every edge has a different color. We also show that if n is even and urn:x-wiley:10429832:media:rsa20594:rsa20594-math-0007 where K is sufficiently large then w.h.p. there is a rainbow colored Hamilton cycle in urn:x-wiley:10429832:media:rsa20594:rsa20594-math-0008. Here urn:x-wiley:10429832:media:rsa20594:rsa20594-math-0009 denotes a random edge coloring of urn:x-wiley:10429832:media:rsa20594:rsa20594-math-0010 with n colors. When n is odd, our proof requires urn:x-wiley:10429832:media:rsa20594:rsa20594-math-0011 for there to be a rainbow Hamilton cycle. © 2015 Wiley Periodicals, Inc. Random Struct. Alg., 48, 503–523, 2016
Keywords:random hypergraphs  perfect matchings  rainbow colorings  latin transversal
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号