The log-concavity of Genus Distributions
主 题: The log-concavity of Genus Distributions
报告人: 王国亮博士 (Department of Mathematics，University of Haifa，Israel)
时 间: 2014-06-04 16:00 - 17:00
地 点: 理科一号楼 1309（主持人：冯荣权）
Motivated by the 25-year conjecture LCGD, which interplays between topological graph theory and enumerative combinatorics, we developed some criteria for the log-concavity of sum of convolutions of sequences based on newly introduced concepts. These criteria are proved powerful in confirming the log-concavity of some graph families formed by vertex- and edge-amalgamation, and turned out to be interesting on their own rights.