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FORCING BONDS OF A BENZENOID SYSTEM
作者姓名:张福基  李学良
作者单位:ZHANG FUJI (Department of Mathematics,Xiamen University,Xiamen 850046,China)LI XUELIANG (Department of Applied Mathematics,North West Industry University,Xi'an 710000,China)
摘    要:FORCINGBONDSOFABENZENOIDSYSTEMZHANGFUJI(DepartmentofMathematics,XiamenUniversity,Xiamen850046,China)LIXUELIANG(DepartmentofAp...

收稿时间:1 January 1993

Forcing bonds of a benzenoid system
Fuji Zhang,Xueliang Li.FORCING BONDS OF A BENZENOID SYSTEM[J].Acta Mathematicae Applicatae Sinica,1996,12(2):209-215.
Authors:Fuji Zhang  Xueliang Li
Institution:(1) Department of Mathematics, Xiamen University, 830046 Xiamen, China;(2) Department of Applied Mathematics, North West Industry University, 710000 Xi'an, China
Abstract:For a Kekulean benzenoid system, we can define the fixed single bonds, fixed double bonds and forcing bounds. The first and second types of bonds can be recognized by efficient algorithms.In this paper, we give an efficient algorithm to recognize the forcing bonds of a benzenoid system.For a cata-condensed benzenoid system we completely determine its forcing bonds. Furthermore,by Polya's theorem we enumerate all cat-condensed benzenoid Systems with forcing bonds.
Keywords:Benzenoid system  forcing bond  algorithm
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