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在两个圈的直积图上的平衡二元映射
引用本文:林晶.在两个圈的直积图上的平衡二元映射[J].福建建筑高等专科学校学报,2013(4):307-311.
作者姓名:林晶
作者单位:福建工程学院数理系,福建福州350118
基金项目:国家自然科学基金项目(10971027)
摘    要:对于直积图G=Cm□Cn,f:V(G)→Z2={0,1}是任意一个定义在顶点集上的二元映射,定义110=f1(0),V1=f1(1)。若│┃V1┃-V0┃-┃│≤1,则称映射,是平衡的。f可以自然诱导出一个定义在边集E(G)上的二元映射以:E(G)→Z2,且fE(xy)=f(x)+f(y)。令E0=fE1(0),E1=fE-1(1),那么D(G,f)=┃E1(f)┃-┃E0(f)┃。文章通过在两个圈的直积图Cm□Cn上构造一系列平衡二元映射的方法,完全确定了在平衡映射下的边差集D(Cm□Gn)。

关 键 词:平衡二元映射  直积图  简单交换

Balanced binary mappings on direct products of two cycles
Lin Jing.Balanced binary mappings on direct products of two cycles[J].Journal of Fujian College of Architecture & C.E.,2013(4):307-311.
Authors:Lin Jing
Affiliation:Lin Jing (Mathematics and Physics Department, Fujian University of Technology, Fuzhou 350118, China)
Abstract:Abstract: For any binary mappings :V(G)→Z2={0,1} defined on the direct product Cm□Cn,mappingfis said to be balanced if │┃V1┃-V0┃-┃│≤1,Vo =f-1(0),V1 =f-1(1). Abalancedbipartition f induces naturally a binary mapping fE on E (G), fE : E (G) →Z2 by fE(xy) =f( x ) +f(y). Let Eo =FE-1(0),E1 =FE-1(1),D(G,f) =┃E,(f) ┃ -┃ Eo(f)┃. In this paper, a sequenceof balanced binary mappings on direct products of two cycles Cm□Gn is constructed and the edgedifference set D(Cm□Gn) ={┃ E1(f)┃-┃E0(f)┃ :fis balanced} is completely determined.
Keywords:balanced binary mapping  direct product  simple exchange
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