Results 71 to 80 of about 1,532 (205)

Size‐Ramsey numbers of graphs with maximum degree three

open access: yesJournal of the London Mathematical Society, Volume 111, Issue 3, March 2025.
Abstract The size‐Ramsey number r̂(H)$\hat{r}(H)$ of a graph H$H$ is the smallest number of edges a (host) graph G$G$ can have, such that for any red/blue colouring of G$G$, there is a monochromatic copy of H$H$ in G$G$. Recently, Conlon, Nenadov and Trujić showed that if H$H$ is a graph on n$n$ vertices and maximum degree three, then r̂(H)=O(n8/5 ...
Nemanja Draganić, Kalina Petrova
wiley   +1 more source

Bisimplicial separators

open access: yesJournal of Graph Theory, Volume 106, Issue 4, Page 816-842, August 2024.
Abstract A minimal separator of a graph G is a set S ⊆ V ( G ) such that there exist vertices a , b ∈ V ( G ) ⧹ S with the property that S separates a from b in G, but no proper subset of S does. For an integer k ≥ 0, we say that a minimal separator is k‐simplicial if it can be covered by k cliques and denote by G k the class of all graphs in which ...
Martin Milanič   +3 more
wiley   +1 more source

Dynamic treewidth

open access: yes2023 IEEE 64th Annual Symposium on Foundations of Computer Science (FOCS), 2023
80 pages, 2 ...
Korhonen, Tuukka   +4 more
openaire   +2 more sources

On the parameterized complexity of computing tree-partitions [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science
We study the parameterized complexity of computing the tree-partition-width, a graph parameter equivalent to treewidth on graphs of bounded maximum degree.
Hans L. Bodlaender   +2 more
doaj   +1 more source

Tree independence number I. (Even hole, diamond, pyramid)‐free graphs

open access: yesJournal of Graph Theory, Volume 106, Issue 4, Page 923-943, August 2024.
Abstract The tree‐independence number tree‐ α, first defined and studied by Dallard, Milanič, and Štorgel, is a variant of treewidth tailored to solving the maximum independent set problem. Over a series of papers, Abrishami et al. developed the so‐called central bag method to study induced obstructions to bounded treewidth.
Tara Abrishami   +5 more
wiley   +1 more source

Treewidth of circle graphs

open access: yesInternational Journal of Foundations of Computer Science, 1993
In this paper we show that the treewidth of a circle graph can be computed in polynomial time. A circle graph is a graph that is isomorphic to the intersection graph of a finite collection of chords of a circle. The TREEWIDTH problem can be viewed upon as the problem of finding a chordal embedding of the graph that minimizes the clique number.
openaire   +5 more sources

On Interval Routing Schemes and treewidth [PDF]

open access: yesInformation and Computation, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bodlaender, H.L.   +3 more
openaire   +3 more sources

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