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20 results for “Basic graph theory concepts”

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cs.NIEmpiricalRecentJul 27, 2026

Methods for Path Set Attribute Calculation in Network Systems

Giovanni Fiaschi, Carlo Vitucci, Thomas Westerbäck, Daniel Sundmark +1 more

This paper presents an optimized algorithm for computing cut sets of a path set in graph theory and introduces a vectorized computational framework for property calculations.

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cs.DMmath.COTheoreticalRecentJul 26, 2026

Set-defined graph classes: $χ$-boundedness meets tropical algebra

Sarosh Adenwalla, Samuel Braunfeld, Tomáš Hons, John Sylvester +1 more

This paper studies set-defined graph classes and proves that bounded unions of shift-colorable graphs form the fundamental obstruction to chromatic number boundness in these classes.

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cs.DScs.DMmath.COTheoreticalRecentJul 10, 2026

A Polynomial-Time Algorithm for Coloring Perfect Graphs Based on Walk Counting

Amir Ali Ahmadi, Pravesh K. Kothari, Yukai Tang

A new polynomial-time algorithm is presented for optimally coloring perfect graphs using graph-theoretic operations and iterative walk counting.

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cs.DScs.CCcs.DMTheoreticalRecentJun 26, 2026

Maximum Cut Algorithms and Upper Bounds for Planar and Toroidal Graphs

Mark Glass, Meir Feder

The authors map the problem of finding the maximum cut of a planar graph with arbitrary weights to a minimum T-join problem in the absolute dual graph, enabling the use of shortest paths and adapting…

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math.COcs.DMTheoreticalRecentJun 25, 2026

Totally Disjoint Diametral Paths

Tınaz Ekim, Arthur Farley

This paper studies the problem of finding totally disjoint diametral paths in simple connected graphs and provides algorithms for certain classes of graphs.

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cs.DMmath.COTheoreticalRecentJul 3, 2026

The disjoint separators problem in graphs

Thomas Delépine, Florian Galliot, Yannick Mogge, Leandro Montero +1 more

This paper studies the NP-completeness and provides a polynomial-time algorithm for the disjoint separators problem in planar graphs when all sizes are equal to one.

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cs.DSmath.CONEWTheoreticalJul 28, 2026

Optimization of the directed spanning trees using the weighted matroid intersection algorithm

Binhong Jiang, Gehao Wang

The paper presents an algorithm for updating a Directed Minimum Spanning Tree using the weighted matroid intersection algorithm and a dynamic auxiliary graph.

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math.COcs.CCTheoreticalRecentJul 10, 2026

Cut-homotopies and the complexity of edge-coloring problems

Alexey Barsukov, Roman Feller, Maximilian Hadek, Davide Perinti

The paper shows that every problem asking if a given graph has an edge-coloring without an edge-colored clique from a fixed family is poly-time equivalent to a Constraint Satisfaction Problem, resulti…

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math.COcs.DMTheoreticalRecentJul 19, 2026

Strong edge-colouring via local flag algebras

Eoin Davey, Eoin Hurley, Rémi de Joannis de Verclos, Ross J. Kang +1 more

This paper uses local flag algebra to prove bounds on the strong chromatic index of graphs, making progress towards established conjectures for general, bipartite, and asymmetric bipartite graphs.

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math.COcs.CCTheoreticalRecentJul 21, 2026

Counting spanning quasi-trees of ribbon graphs: determinants and #P-completeness

William Whistler

This paper proves that counting quasi-trees in a connected ribbon graph is #P-complete.

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math.COcs.DMTheoreticalRecentJul 8, 2026

A coarse block-cut tree theorem

Júlia Baligács, Václav Blažej, Jadwiga Czyżewska, Michał Pilipczuk +1 more

This paper proves a coarse tree decomposition of graphs with bounded adhesion sets and separators.

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cs.CCTheoreticalRecentJul 20, 2026

Faster Algorithms for Deciding the Unbiased Maker-Breaker Triangle Game on General Graphs

Julian Christoph Brinkmann, Anand Srivastav

This paper presents new polynomial-time algorithms for determining the winner of the unbiased triangle game on the edge set of general graphs using the edge-triangle incidence graph.

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math.COcs.ITTheoreticalRecentJul 15, 2026

Independent Sets in Multiset Profile Graphs via Weighted Local Covers

Aryeh Lev Zabokritskiy

This paper studies the maximum size of an independent set in the discrete simplex graph and provides new bounds using translated smaller graphs and finite rational linear systems.

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math.COcs.DMTheoreticalRecentJul 22, 2026

Polyhedral Maps of Cubic Graphs with given Automorphism Groups

Ugo Detaille, Meike Weiß, Reymond Akpanya, Alice C. Niemeyer

This paper constructs a cubic graph with a polyhedral map whose automorphism groups are isomorphic to a given finite group.

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cs.DSEmpiricalRecentJun 12, 2026

On a Conjecture for Parameterized st-Orientations

Charalampos Papamanthou

This paper disproves a conjecture about the longest-path lengths of MaxSTN and MinSTN algorithms for producing $st$-orientations of biconnected graphs.

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