天元讲堂（11.19） Totally positive matrices and their applications in combinatorics
报告人： 王毅 教授大连理工大学报告时间: 2018年11月19日下午15:00-16:00报告地点: 精正楼307教室报告摘要: In this talk, we first present some criteria for total positivity of combinatorial matrices, and then apply them to analytic behaviors of combinatorial sequences, with emphases on the log-concavity and log-convexity.