Results 91 to 100 of about 6,506,964 (218)

哈林图的偶匹配可扩性(Bipartite matching-extendability of Halin graphs)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2009
Let G be a connected graph containing a perfect matching. G is said to be bipartite matching extendable if every matching M of G whose induced subgraph is a bipartite matching extends to a perfect matching of G. The main result is as follows: Halin graph
HUIZhi-hao(惠志昊), ZHAOBiao(赵飚)
doaj   +1 more source

Combination theorems for Wise's power alternative

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 1, January 2026.
Abstract We show that Wise's power alternative is stable under certain group constructions, use this to prove the power alternative for new classes of groups and recover known results from a unified perspective. For groups acting on trees, we introduce a dynamical condition that allows us to deduce the power alternative for the group from the power ...
Mark Hagen   +2 more
wiley   +1 more source

Quasipolynomiality of the Smallest Missing Induced Subgraph [PDF]

open access: green, 2023
David Eppstein   +2 more
openalex   +1 more source

Hamilton cycles in almost distance-hereditary graphs

open access: yesOpen Mathematics, 2016
Let G be a graph on n ≥ 3 vertices. A graph G is almost distance-hereditary if each connected induced subgraph H of G has the property dH(x, y) ≤ dG(x, y) + 1 for any pair of vertices x, y ∈ V(H).
Chen Bing, Ning Bo
doaj   +1 more source

Some Variations of Perfect Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2016
We consider (ψk−γk−1)-perfect graphs, i.e., graphs G for which ψk(H) = γk−1(H) for any induced subgraph H of G, where ψk and γk−1 are the k-path vertex cover number and the distance (k − 1)-domination number, respectively.
Dettlaff Magda   +3 more
doaj   +1 more source

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