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On the purity of minor-closed classes of graphs

Abstract:

Given a graph H with at least one edge, let gapH(n) denote the maximum difference between the numbers of edges in two n-vertex edge-maximal graphs with no minor H. We show that for exactly four connected graphs H (with at least two vertices), the class of graphs with no minor H is pure, that is, gapH(n) = 0 for all n ≥ 1; and for each connected graph H (with at least two vertices) we have the dichotomy that either gapH(n) = O(1) or gapH(n) = ⊝(n). Further, if H is 2-connected and does not yie...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1016/j.jctb.2018.08.010

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Statistics
Oxford college:
Corpus Christi College
Role:
Author
Publisher:
Elsevier Publisher's website
Journal:
Journal of Combinatorial Theory. Series B Journal website
Volume:
135
Pages:
295-318
Publication date:
2018-09-05
Acceptance date:
2018-08-31
DOI:
EISSN:
1096-0902
ISSN:
0095-8956
Keywords:
Pubs id:
pubs:641935
UUID:
uuid:c43d6645-1b7a-4380-b4dc-4d677ee34470
Local pid:
pubs:641935
Source identifiers:
641935
Deposit date:
2018-10-10

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