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ISSN 1234-3099 (print version)

ISSN 2083-5892 (electronic version)

https://doi.org/10.7151/dmgt

Discussiones Mathematicae Graph Theory

Journal Impact Factor (JIF 2022): 0.7

5-year Journal Impact Factor (2022): 0.7

CiteScore (2022): 1.9

SNIP (2022): 0.902

Discussiones Mathematicae Graph Theory

Article in volume


Authors:

L.-T. Yuan

Long-Tu Yuan

East China Normal University

email: ltyuan@math.ecnu.edu.cn

X.-D. Zhang

Xiao-Dong Zhang

Shanghai Jiao Tong University

email: xiaodong@sjtu.edu.cn

Title:

Extremal graphs for even linear forests in bipartite graphs

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Source:

Discussiones Mathematicae Graph Theory 44(1) (2024) 5-16

Received: 2020-09-20 , Revised: 2021-08-03 , Accepted: 2021-08-03 , Available online: 2021-08-24 , https://doi.org/10.7151/dmgt.2429

Abstract:

Zarankiewicz proposed the problem of determining the maximum number of edges in an $(n,m)$-bipartite graph containing no complete bipartite graph $K_{a,b}$. In this paper, we consider a variant of Zarankiewicz's problem and determine the maximum number of edges of an $(n,m)$-bipartite graph without containing a linear forest consisting of even paths. Moveover, all these extremal graphs are characterized in a recursion way.

Keywords:

bipartite graph, linear forest, extremal graph, Turán number

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