Results 121 to 130 of about 11,505 (254)

Planar Disjoint Paths, Treewidth, and Kernels [PDF]

open access: green, 2023
Michał Włodarczyk, Meirav Zehavi
openalex   +1 more source

Cop-width, flip-width and strong colouring numbers [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science
Cop-width and flip-width are new families of graph parameters introduced by Toru\'nczyk (2023) that generalise treewidth, degeneracy, generalised colouring numbers, clique-width and twin-width.
Robert Hickingbotham
doaj   +1 more source

Hitting minors on bounded treewidth graphs. III. Lower bounds [PDF]

open access: green, 2021
Julien Baste   +2 more
openalex   +1 more source

On Treewidth and Stable Marriage

open access: yesCoRR, 2017
Stable Marriage is a fundamental problem to both computer science and economics. Four well-known NP-hard optimization versions of this problem are the Sex-Equal Stable Marriage (SESM), Balanced Stable Marriage (BSM), max-Stable Marriage with Ties (max-SMT) and min-Stable Marriage with Ties (min-SMT) problems.
Sushmita Gupta   +2 more
openaire   +2 more sources

Heuristic computation of exact treewidth

open access: yesCoRR, 2022
We are interested in computing the treewidth $\tw(G)$ of a given graph $G$. Our approach is to design heuristic algorithms for computing a sequence of improving upper bounds and a sequence of improving lower bounds, which would hopefully converge to $\tw(G)$ from both sides.
openaire   +4 more sources

Lower Bounds for the Complexity of Monadic Second-Order Logic

open access: yes, 2010
Courcelle's famous theorem from 1990 states that any property of graphs definable in monadic second-order logic (MSO) can be decided in linear time on any class of graphs of bounded treewidth, or in other words, MSO is fixed-parameter tractable in linear
Kreutzer, Stephan, Tazari, Siamak
core   +2 more sources

Fast simulation of planar Clifford circuits [PDF]

open access: yesQuantum
A general quantum circuit can be simulated classically in exponential time. If it has a planar layout, then a tensor-network contraction algorithm due to Markov and Shi has a runtime exponential in the square root of its size, or more generally ...
David Gosset   +3 more
doaj   +1 more source

Approximating the Treewidth of AT-Free Graphs

open access: yesDiscrete Applied Mathematics, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bouchitté, Vincent, Todinca, Ioan
openaire   +4 more sources

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