Supported by the National Natural Science Foundation of China(No.10271017,11371133,11571044);the Natural Science Foundation Project of Chongqing(No.cstc2012jj A00041,cstc2014jcyj A00041);the Innovation Foundation of Chongqing(No.KJTD201321)
A map is 4-regular unicursal if all its vertices are 4-valent except two odd-valent vertices. This paper investigates the number of rooted 4-regular unicursal planar maps and presents some formulae for such maps with ...
Supported by NSFC(No.10271017,No.11371133);Natural Science Foundation Project of Chongqing(No.cstc2012jjA00041);Chongqing Innovation Fund(No.KJTD201321)
Supported by the National Natural Science Foundation of China(No.10271017);the Natural Science Foundation Project of Chongqing(N0.cstc2012jjA00041);Chongqing Innovation Fund(grant no.KJTD201321)
This paper investigates the number of rooted unicursal planar maps and presents some formulae for such maps with four parameters: the numbers of nonrooted vertices and inner faces and the valencies of two odd vertices.
supported by NSFC(No.10271017);Chongqing Municipal Education Commission (No.KJ101204,No.KJ091217);the Natural Science Foundation Project of Chongqing(No. cstc2012jjA00041)