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author:

Hong, Yanmei (Hong, Yanmei.) [1] (Scholars:洪艳梅) | Lai, Hong-Jian (Lai, Hong-Jian.) [2]

Indexed by:

Scopus SCIE

Abstract:

Lovasz conjectured that there is a smallest integer f(l) such that for every f(l)-connected graph G and every two vertices s, t of G there is a path P connecting s and t such that G - V (P) is l-connected. This conjecture is still open for l >= 3. In this paper, we generalize this conjecture to a k-vertex version: is there a smallest integer f (k, l) such that for every f(k, l)-connected graph and every subset X with k vertices, there is a tree T connecting X such that G - V (T) is l-connected? We prove that f (k, l) = k + 1 and f(k, 2) <= 2k + 1. (C) 2012 Elsevier B.V. All rights reserved.

Keyword:

Connectivity Non-separating subgraphs X-tree

Community:

  • [ 1 ] [Hong, Yanmei]Fuzhou Univ, Dept Math, Fuzhou 350108, Peoples R China
  • [ 2 ] [Lai, Hong-Jian]W Virginia Univ, Dept Math, Morgantown, WV 26506 USA

Reprint 's Address:

  • 洪艳梅

    [Hong, Yanmei]Fuzhou Univ, Dept Math, Fuzhou 350108, Peoples R China

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Source :

DISCRETE MATHEMATICS

ISSN: 0012-365X

Year: 2013

Issue: 4

Volume: 313

Page: 391-396

0 . 5 6 6

JCR@2013

0 . 7 0 0

JCR@2023

ESI Discipline: MATHEMATICS;

JCR Journal Grade:3

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count: 1

SCOPUS Cited Count: 1

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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