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Let G be a graph which may have multiple edges but no loops, μG(v) be the multiplicity of G (which is the maximum among the numbers of edges between v and the other vertex on G), and a and b be any two functions, s.t. a,b:V(G)→N\{0,1}. A theta is a graph made of three internally vertex-disjoint chordless paths P1=x-⋯-y, P2=x-⋯-y, P3=x-⋯-y of length at least two and no edges exist between Pi and Pj (i≠j,i,j∈{1,2,3}) except the three edges incident to x and the three edges incident to y. For a partition (X, Y) of V(G), and any x∈X, y∈Y, let dX(x) denote by the degree of x in G[X], and dY(y) be defined similarly. In this paper, we show that a graph G admits a partition (A, B) such that dA(x)≥a(x) for any x∈A and dB(y)≥b(y) for any y∈B if G is H-free and dG(v)≥a+b+2μG(v)-3 for any vertex v∈V(G), where for each member H∈H, the underlying of H belongs to {triangle, wheel, theta}. © The Author(s) under exclusive licence to Sociedade Brasileira de Matemática Aplicada e Computacional 2024.
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Computational and Applied Mathematics
ISSN: 2238-3603
Year: 2025
Issue: 1
Volume: 44
2 . 5 0 0
JCR@2023
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 1
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