Results 191 to 200 of about 8,313 (308)

Properly Colored Cycles in Edge‐Colored Balanced Bipartite Graphs

open access: yesJournal of Graph Theory, Volume 112, Issue 2, Page 37-53, June 2026.
ABSTRACT Let G n , n c denote a (not necessarily properly) edge‐colored balanced bipartite graph on 2 n vertices, that is, in which every edge is assigned a color. A cycle C in G n , n c is called properly colored if any two consecutive edges of C have distinct colors.
Tingting Han   +3 more
wiley   +1 more source

Learning Rule-Induced Subgraph Representations for Inductive Relation Prediction

open access: yes
Inductive relation prediction (IRP) -- where entities can be different during training and inference -- has shown great power for completing evolving knowledge graphs.
Lv, Qitan   +4 more
core   +1 more source

Domination in 4‐Regular Graphs With No Induced 4‐Cycles

open access: yesJournal of Graph Theory, Volume 112, Issue 2, Page 62-95, June 2026.
ABSTRACT A set S of vertices in a graph G is a dominating set of G if every vertex not in S is adjacent to a vertex in S. The domination number of G, denoted by γ ( G ), is the minimum cardinality of a dominating set in G. The 1 3‐conjecture for domination in 4‐regular graphs states that if G is a 4‐regular graph of order n, then γ ( G ) ≤ 1 3 n.
Michael A. Henning, Anders Yeo
wiley   +1 more source

On-line Maximum-order Induced Hereditary Subgraph Problems.

open access: yes
We first study the competitivity ratio for the on-line version of the problem of finding a maximum-order induced subgraph satisfying some hereditary property, under the hypothesis that the input graph is revealed by clusters.
Paschos, V.T., Demange, M., Paradon, X.
core  

Another Proof of the Generalized Tutte—Berge Formula for f‐Bounded Subgraphs

open access: yesJournal of Graph Theory, Volume 112, Issue 2, Page 145-150, June 2026.
ABSTRACT Given a nonnegative integer weight f ( v ) for each vertex v in a multigraph G, an f‐bounded subgraph of G is a multigraph H contained in G such that d H ( v ) ≤ f ( v ) for all v ∈ V ( G ). Using Tutte's f‐Factor Theorem, we give a new proof of the min–max relation for the maximum size of an f‐bounded subgraph of G. When f ( v ) = 1 for all v,
Zishen Qu, Douglas B. West
wiley   +1 more source

The Independence Ratio of 4‐Cycle‐Free Planar Graphs

open access: yesJournal of Graph Theory, Volume 112, Issue 2, Page 116-127, June 2026.
ABSTRACT We prove that every n‐vertex planar graph G with no triangle sharing an edge with a 4‐cycle has independence ratio n ∕ α ( G ) ≤ 4 − ε for ε = 1 ∕ 30. This result implies that the same bound holds for 4‐cycle‐free planar graphs and planar graphs with no adjacent triangles and no triangle sharing an edge with a 5‐cycle.
Tom Kelly   +3 more
wiley   +1 more source

Robustness Assessment of Public Transport Networks in Various Graph Representations: Systematic Review, Decision Support, and Case Study

open access: yesNetworks, Volume 87, Issue 4, Page 343-371, June 2026.
ABSTRACT The analysis of certain properties of the underlying graph of a public transport network generates insights about the network's structure. Hereby, the choice of the graph representation depends on a trade‐off between complexity reduction and information preservation to adequately model a public transport network.
Michael Palk   +2 more
wiley   +1 more source

Sparse induced subgraphs of large treewidth

open access: yesJournal of Combinatorial Theory, Series B
16 pages, 3 ...
openaire   +3 more sources

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