Independent Set on -Free Graphs in Quasi-Polynomial Time

P Gartland, D Lokshtanov - 2020 IEEE 61st Annual Symposium …, 2020 - ieeexplore.ieee.org
We present an algorithm that takes as input a graph G with weights on the vertices, and
computes a maximum weight independent set S of G. If the input graph G excludes a path P …

Quasi-polynomial-time algorithm for Independent Set in Pt-free graphs via shrinking the space of induced paths

M Pilipczuk, M Pilipczuk, P Rzążewski - Symposium on Simplicity in Algorithms …, 2021 - SIAM
In a recent breakthrough work, Gartland and Lokshtanov [FOCS 2020] showed a quasi-
polynomial-time algorithm for Maximum Weight Independent Set in Pt-free graphs, that is …

Quasi-polynomial time approximation schemes for the maximum weight independent set problem in H-free graphs

M Chudnovsky, M Pilipczuk, M Pilipczuk… - arXiv preprint arXiv …, 2019 - arxiv.org
In the Maximum Independent Set problem we are asked to find a set of pairwise
nonadjacent vertices in a given graph with the maximum possible cardinality. In general …

On the maximum weight independent set problem in graphs without induced cycles of length at least five

M Chudnovsky, M Pilipczuk, M Pilipczuk… - SIAM Journal on Discrete …, 2020 - SIAM
A hole in a graph is an induced cycle of length at least 4, and an antihole is the complement
of an induced cycle of length at least 4. A hole or antihole is long if its length is at least 5. For …

[HTML][HTML] Subexponential algorithms for variants of the homomorphism problem in string graphs

K Okrasa, P Rzążewski - Journal of Computer and System Sciences, 2020 - Elsevier
We consider subexponential algorithms finding weighted homomorphisms from intersection
graphs of curves (string graphs) with n vertices to a fixed graph H. We provide a complete …

Colouring (Pr + Ps)-Free Graphs

T Klimošová, J Malík, T Masařík, J Novotná… - Algorithmica, 2020 - Springer
The k-Colouring problem is to decide if the vertices of a graph can be coloured with at most k
colours for a fixed integer k such that no two adjacent vertices are coloured alike. If each …

Colouring H-free graphs of bounded diameter

B Martin, D Paulusma, S Smith, P Rossmanith… - 2019 - durham-repository.worktribe.com
The Colouring problem is to decide if the vertices of a graph can be coloured with at most k
colours for an integer k, such that no two adjacent vertices are coloured alike. A graph G is H …

Finding Large -Colorable Subgraphs in Hereditary Graph Classes

M Chudnovsky, J King, M Pilipczuk… - SIAM Journal on Discrete …, 2021 - SIAM
We study the Max Partial h-Coloring problem: given a graph G, find the largest induced
subgraph of G that admits a homomorphism into H, where H is a fixed pattern graph without …

On cycle transversals and their connected variants in the absence of a small linear forest

KK Dabrowski, C Feghali, M Johnson, G Paesani… - Algorithmica, 2020 - Springer
A graph is H-free if it contains no induced subgraph isomorphic to H. We prove new
complexity results for the two classical cycle transversal problems Feedback Vertex Set and …

Complexity of Ck-coloring in hereditary classes of graphs

M Chudnovsky, S Huang, P Rzążewski, S Spirkl… - Information and …, 2023 - Elsevier
For a graph F, a graph G is F-free if it does not contain an induced subgraph isomorphic to F.
For two graphs G and H, an H-coloring of G is a mapping f: V (G)→ V (H) such that for every …