A NOTE ON THE NUMBER OF CUBIC PLANAR MAPS

数学物理学报(英文版) ›› 1992, Vol. 12 ›› Issue (3): 282-285.

A NOTE ON THE NUMBER OF CUBIC PLANAR MAPS

刘彦佩

Institute of Applied Mathematics, Academia Sinica, Beijing 100080, China

收稿日期:1989-08-26 出版日期:1992-09-25 发布日期:1992-09-25
基金资助:
Supported by the National Natural Science Foundation of China.

A NOTE ON THE NUMBER OF CUBIC PLANAR MAPS

Liu Yanpei

Institute of Applied Mathematics, Academia Sinica, Beijing 100080, China

Received:1989-08-26 Online:1992-09-25 Published:1992-09-25
Supported by:
Supported by the National Natural Science Foundation of China.

摘要/Abstract

摘要： This note shows that the number of rooted cubic planar maps (loops and multi-edges are allowed) with 2n-3 non-root-vertices, n ≥ 3, is
∑_i=0^n-1(2^2n-i-1!(2n-i-1)!)/(i!(n-i-2)!n!(n+1)!).

刘彦佩. A NOTE ON THE NUMBER OF CUBIC PLANAR MAPS[J]. 数学物理学报(英文版), 1992, 12(3): 282-285.

Liu Yanpei. A NOTE ON THE NUMBER OF CUBIC PLANAR MAPS[J]. Acta mathematica scientia,Series B, 1992, 12(3): 282-285.

A NOTE ON THE NUMBER OF CUBIC PLANAR MAPS

A NOTE ON THE NUMBER OF CUBIC PLANAR MAPS

PDF (PC)

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 0

Metrics

本文评价

推荐阅读 10