Redicolouring digraphs: directed treewidth and cycle-degeneracy

N Nisse, L Picasarri-Arrieta, I Sau - Discrete Applied Mathematics, 2024 - Elsevier
Given a digraph D=(V, A) on n vertices and a vertex v∈ V, the cycle-degree of v is the
minimum size of a set S⊆ V (D)∖{v} intersecting every directed cycle of D containing v. From …

[HTML][HTML] Optimally reconfiguring list and correspondence colourings

S Cambie, WC van Batenburg, DW Cranston - European Journal of …, 2024 - Elsevier
The reconfiguration graph C k (G) for the k-colourings of a graph G has a vertex for each
proper k-colouring of G, and two vertices of C k (G) are adjacent precisely when those k …

Short and local transformations between ()-colorings

N Bousquet, L Feuilloley, M Heinrich… - arXiv preprint arXiv …, 2022 - arxiv.org
Recoloring a graph is about finding a sequence of proper colorings of this graph from an
initial coloring $\sigma $ to a target coloring $\eta $. Adding the constraint that each pair of …

Reconfiguration graphs for vertex colorings of -free graphs

H Lei, Y Ma, Z Miao, Y Shi, S Wang - arXiv preprint arXiv:2409.19368, 2024 - arxiv.org
For any positive integer $ k $, the reconfiguration graph for all $ k $-colorings of a graph $ G
$, denoted by $\mathcal {R} _k (G) $, is the graph where vertices represent the $ k …

List-recoloring of sparse graphs

DW Cranston - European Journal of Combinatorics, 2022 - Elsevier
Fix a graph G, a list-assignment L for G, and L-colorings α and β. An L-recoloring sequence,
starting from α, recolors a single vertex at each step, so that each resulting intermediate …

5‐Coloring reconfiguration of planar graphs with no short odd cycles

DW Cranston, R Mahmoud - Journal of Graph Theory, 2024 - Wiley Online Library
The coloring reconfiguration graph C k (G) C_k(G) has as its vertex set all the proper kk‐
colorings of GG, and two vertices in C k (G) C_k(G) are adjacent if their corresponding kk …

List recoloring of planar graphs

LS Chandran, UK Gupta, D Pradhan - arXiv preprint arXiv:2209.05992, 2022 - arxiv.org
A list assignment $ L $ of a graph $ G $ is a function that assigns to every vertex $ v $ of $ G
$ a set $ L (v) $ of colors. A proper coloring $\alpha $ of $ G $ is called an $ L $-coloring of …

Digraph colouring

L Picasarri-Arrieta - 2024 - theses.hal.science
This thesis focuses on a notion of colouring of digraphs introduced by ErdH {o} s and
Neumann-Lara in the late 1970s, namely the dicolouring, and its associated digraph …

Graph Coloring Reconfiguration

R Mahmoud - 2024 - scholarscompass.vcu.edu
Reconfiguration is the concept of moving between different solutions to a problem by
transforming one solution into another using some prescribed transformation rule (move) …

[PDF][PDF] Coloration de graphes dirigés

L Picasarri-Arrieta - 2024 - lucaspicasarri.github.io
This thesis focuses on a notion of colouring of digraphs introduced by Erdos and Neumann-
Lara in the late 1970s, namely the dicolouring, and its associated digraph parameter: the …