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author:

Fan, Genghua (Fan, Genghua.) [1] (Scholars:范更华) | Jiang, Hongbi (Jiang, Hongbi.) [2] | Li, Ping (Li, Ping.) [3] | West, Douglas B. (West, Douglas B..) [4] | Yang, Daqing (Yang, Daqing.) [5] | Zhu, Xuding (Zhu, Xuding.) [6]

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Abstract:

Let M be a loopless matroid on E with rank function r(m). Let beta(M) = max(empty set not equal X subset of E) vertical bar X vertical bar/R-M(X) and phi(M) = Minr(M)(X)= 0 is an integer and 0 <= epsilon < 1, then E can be partitioned into k + 1 independent sets with one of size at most epsilon . r(M)(E). If ca(M) = k + epsilon, then M has k + 1 disjoint independent sets such that k are bases and the other has size at least epsilon . r(M)(E). We apply these results to truncations of cycle matroids to refine graph-theoretic results due to Chen, Koh, and Peng in 1993 and to Chen and Lai in 1996. (C) 2018 Elsevier Ltd. All rights reserved.

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Community:

  • [ 1 ] [West, Douglas B.]Zhejiang Normal Univ, Dept Math, Jinhua, Zhejiang, Peoples R China
  • [ 2 ] [Yang, Daqing]Zhejiang Normal Univ, Dept Math, Jinhua, Zhejiang, Peoples R China
  • [ 3 ] [Zhu, Xuding]Zhejiang Normal Univ, Dept Math, Jinhua, Zhejiang, Peoples R China
  • [ 4 ] [Fan, Genghua]Fuzhou Univ, Ctr Discrete Math, Fuzhou, Fujian, Peoples R China
  • [ 5 ] [Jiang, Hongbi]Fuzhou Univ, Ctr Discrete Math, Fuzhou, Fujian, Peoples R China
  • [ 6 ] [Li, Ping]Fuzhou Univ, Ctr Discrete Math, Fuzhou, Fujian, Peoples R China
  • [ 7 ] [Yang, Daqing]Fuzhou Univ, Ctr Discrete Math, Fuzhou, Fujian, Peoples R China
  • [ 8 ] [Li, Ping]Nankai Univ, Ctr Combinator, Tianjin, Peoples R China
  • [ 9 ] [Li, Ping]AHJZU, Urban Construct Coll, Hefei, Anhui, Peoples R China
  • [ 10 ] [West, Douglas B.]Univ Illinois, Dept Math, 1409 W Green St, Urbana, IL 61801 USA

Reprint 's Address:

  • 杨大庆

    [Yang, Daqing]Zhejiang Normal Univ, Dept Math, Jinhua, Zhejiang, Peoples R China;;[Yang, Daqing]Fuzhou Univ, Ctr Discrete Math, Fuzhou, Fujian, Peoples R China

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Source :

EUROPEAN JOURNAL OF COMBINATORICS

ISSN: 0195-6698

Year: 2019

Volume: 76

Page: 117-122

0 . 8 4 8

JCR@2019

1 . 0 0 0

JCR@2023

ESI Discipline: MATHEMATICS;

ESI HC Threshold:59

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 2

SCOPUS Cited Count: 2

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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