%0 Journal Article
%T A Note on the Polysums of Rooted Bitrees<br>关于平面上双树梵和的一个注记
%A Hao Rongxia Liu Yanpei He Weili
%A <br>郝荣霞
%A 刘彦佩
%A 何卫力
%J 数学物理学报(A辑)
%D 2004
%I 
%X In this paper, the chrosum equation of rooted bitrees with the valency of rooted vertex, the number of isthmus and the number of loops is gotten, and also the authers present the explicit formulae for such maps with up to above three parameters and their degenerating cases.
%K Map
%K Polysum
%K Bitree<br>地图
%K 梵和
%K 双树
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=37F46C35E03B4B86&jid=4DB553CDB5F521D8C921082E5C95EC80&aid=5259CA6C2C43D20A&yid=D0E58B75BFD8E51C&vid=B91E8C6D6FE990DB&iid=38B194292C032A66&sid=F7BB24011DC0D223&eid=5F8BAECF36EB55E2&journal_id=1003-3998&journal_name=数学物理学报(A辑)&referenced_num=0&reference_num=12