NIMS Post-doc 세미나
□ 연사: 김하나 연구원 (NIMS)
□ 일시: 2016년 6월 1일(수) 오후4시
□ 장소: 국가수리과학연구소 CAMP 중형세미나실
□ 제목: Enumeration of ordered trees via Riordan matrices
An ordered tree is a rooted tree where the order of the subtrees of a vertex is significant. Some structured matrices called Riordan matrices often arise in enumeration problems concerning certain classes of ordered trees. In this talk, we introduce two kinds of profiles of ordered trees and show how such enumeration and Riordan matrices are related by several examples including doubly rooted plane trees.