Wuhan University Journal of Natural Sciences

, Volume 24, Issue 4, pp 283–289 | Cite as

Saturation Number for Linear Forest 2P3tP2

  • Min LiuEmail author
  • Zhiquan Hu


For a fixed graph F, a graph G is F-saturated if it has no F as a subgraph, but does contain F after the addition of any new edge. The saturation number, sat(n, F), is the minimum number of edges of a graph in the set of all F-saturated graphs with order n. In this paper, we determine the saturation number sat(n,2P3tP2) and characterize the extremal graphs for n ⩾ 6t + 8.

Key words

saturation number saturated graph linear forest 

CLC number



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© Wuhan University and Springer-Verlag GmbH Germany 2019

Authors and Affiliations

  1. 1.College of EconomicsNorthwest University of Political Science and LawXi’an, ShaanxiChina
  2. 2.School of Mathematics and StatisticsCentral China Normal UniversityWuhan, HubeiChina

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