报告人：孙智伟 南京大学

报告题目：COMBINATORIAL QUANTITIES AND ARITHMETIC MEANS

报告时间：3月24日 3：00-4：00

报告地点：1418

摘要：

In combinatorics there are some basic combinatorial quantities aris-

ing from enumeration problems, e.g., central trinomial coefficients T n ,

Motzkin numbers M n , Delannoy numbers D n , little Schröder numbers s n

and large Schröder numbers S n . Surprisingly, such combinatorial quanti-

ties have nice arithmetic properties. In this talk we introduce recent work

of the speaker and his coauthor on weighted arithmetic means involving

the above important combinatorial quantities .