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直径为2的无爪图的导出匹配可扩性

周菊 要卫丽 鲁晓旭

郑州大学学报(理学版)2003,Vol.35Issue(3):12-15,4.
郑州大学学报(理学版)2003,Vol.35Issue(3):12-15,4.

直径为2的无爪图的导出匹配可扩性

Induced Matching Extendability of Claw-free Graphs of Diameter 2

周菊 1要卫丽 1鲁晓旭1

作者信息

  • 1. 郑州大学数学系,郑州,450052
  • 折叠

摘要

Abstract

A simple graph G is induced matching extendable,shortly IM-extendable,if every induced matching of G is included in a perfect matching of G.The induced matching extendability of claw-free graphs of diameter 2 is studied.It is shown that a claw-free graph G of diameter 2 is IM-extendable if and only if,for any induced matching M with |M|≤3 of G,G-V(M) has no odd component.Consequently,the IM-extendability problem of claw-free graphs of diameter 2 is polynomially solvable.

关键词

匹配/完美匹配/导出匹配/IM-可扩的/无爪图

Key words

matching/perfect matching/induced matching/IM-extendable/claw-free

分类

数理科学

引用本文复制引用

周菊,要卫丽,鲁晓旭..直径为2的无爪图的导出匹配可扩性[J].郑州大学学报(理学版),2003,35(3):12-15,4.

郑州大学学报(理学版)

OACSTPCD

1671-6841

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