Results 41 to 50 of about 772 (221)

Graphs with forbidden subgraphs

open access: yesJournal of Combinatorial Theory, Series B, 1971
AbstractMany graphs which are encountered in the study of graph theory are characterized by a type of configuration or subgraph they possess. However, there are occasions when such graphs are more easily defined or described by the kind of subgraphs they are not permitted to contain.
Chartrand, Gary   +2 more
openaire   +2 more sources

On Sequential Heuristic Methods for the Maximum Independent Set Problem

open access: yesDiscussiones Mathematicae Graph Theory, 2017
We consider sequential heuristics methods for the Maximum Independent Set (MIS) problem. Three classical algorithms, VO [11], MIN [12], or MAX [6] , are revisited. We combine Algorithm MIN with the α-redundant vertex technique[3].
Lê Ngoc C.   +2 more
doaj   +1 more source

On the 12-Representability of Induced Subgraphs of a Grid Graph

open access: yesDiscussiones Mathematicae Graph Theory, 2022
The notion of a 12-representable graph was introduced by Jones, Kitaev, Pyatkin and Remmel in [Representing graphs via pattern avoiding words, Electron. J. Combin. 22 (2015) #P2.53].
Chen Joanna N., Kitaev Sergey
doaj   +1 more source

On Multilevel Energy‐Based Fragmentation Methods

open access: yesInternational Journal of Quantum Chemistry, Volume 126, Issue 3, January 30, 2026.
We investigate the working equations of energy‐based fragmentation methods and present ML‐SUPANOVA, a Möbius‐inversion‐based multilevel fragmentation scheme that enables adaptive, quasi‐optimal truncations to efficiently approximate Born‐Oppenheimer potentials across hierarchies of electronic‐structure methods and basis sets.
James Barker   +2 more
wiley   +1 more source

Assigning airport ground handling operations: a data‐driven matheuristic

open access: yesInternational Transactions in Operational Research, Volume 33, Issue 1, Page 359-383, January 2026.
Abstract In this paper, we study a problem in the crossover between vehicle routing and scheduling problems. The multi‐trip capacitated vehicle routing and scheduling problem with time windows and meal breaks is extended to a heterogeneous fleet of trucks and drivers, with qualifications and different loading patterns.
Alexandre Dupaquis   +5 more
wiley   +1 more source

Face Sizes and the Connectivity of the Dual

open access: yesJournal of Graph Theory, Volume 110, Issue 4, Page 379-391, December 2025.
ABSTRACT For each c ≥ 1, we prove tight lower bounds on face sizes that must be present to allow 1‐ or 2‐cuts in simple duals of c‐connected maps. Using these bounds, we determine the smallest genus on which a c‐connected map can have a simple dual with a 2‐cut and give lower and some upper bounds for the smallest genus on which a c‐connected map can ...
Gunnar Brinkmann   +2 more
wiley   +1 more source

Decomposition of 4k-regular graphs into k 4-regular K5-free and (K5−e)-free subgraphs [PDF]

open access: yesDiscrete Mathematics Letters, 2021
Rachel Johnson   +4 more
doaj   +1 more source

Characterizing the forbidden pairs for graphs to be super-edge-connected

open access: yesAKCE International Journal of Graphs and Combinatorics
Let [Formula: see text] be a set of given connected graphs. A graph G is said to be [Formula: see text]-free if G contains no H as an induced subgraph for any [Formula: see text].
Hazhe Ye, Yingzhi Tian
doaj   +1 more source

A general framework on conditions for constraint‐based causal learning

open access: yesScandinavian Journal of Statistics, Volume 52, Issue 4, Page 2209-2241, December 2025.
Abstract Most constraint‐based causal learning algorithms provably return the correct causal graph under certain correctness conditions, such as faithfulness. By representing any constraint‐based causal learning algorithm using the notion of a property, we provide a general framework to obtain and study correctness conditions for these algorithms. From
Kai Z. Teh, Kayvan Sadeghi, Terry Soo
wiley   +1 more source

Line Graphs and Forbidden Induced Subgraphs

open access: yesJournal of Combinatorial Theory, Series B, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Lai, Hong-Jian, Šoltés, Ľubomír
openaire   +1 more source

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