Alternating Paths in Oriented Graphs with Large Semidegree

In new progress on conjectures of Stein, and Addario-Berry, Havet, Linhares Sales, Reed and Thomassé, we prove that every oriented graph with all in- and out-degrees greater than 5k/8 contains an alternating path of length k. This improves on previous results of Klimošová and Stein, and Chen, Hou and Zhou.

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Publication Details

Journal
The Electronic Journal of Combinatorics
Published
2025-11-03
DOI
https://doi.org/10.37236/13084
Primary Topic
Advanced Graph Theory Research
Type
article
Field-Weighted Citation Impact
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article

Alternating Paths in Oriented Graphs with Large Semidegree

Jozef Skokan, Mykhaylo Tyomkyn
The Electronic Journal of Combinatorics
Advanced Graph Theory Research
article

Alternating Paths in Oriented Graphs with Large Semidegree

Jozef Skokan, Mykhaylo Tyomkyn
article en

Abstract

In new progress on conjectures of Stein, and Addario-Berry, Havet, Linhares Sales, Reed and Thomassé, we prove that every oriented graph with all in- and out-degrees greater than 5k/8 contains an alternating path of length k. This improves on previous results of Klimošová and Stein, and Chen, Hou and Zhou.

The Electronic Journal of CombinatoricsVol. 32(4)
Charles University (CZ), London School of Economics and Political Science (GB)
Openalex Percentile: Top 66%
Advanced Graph Theory Research
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Alternating Paths in Oriented Graphs with Large Semidegree — Jozef Skokan, Mykhaylo Tyomkyn · The Electronic Journal of Combinatorics (2025) | TGRS Research Map | TGRS