Results 101 to 110 of about 5,081 (203)

The frequency assignment problem [PDF]

open access: yes, 2004
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This thesis examines a wide collection of frequency assignment problems.
Koller, Angela Erika
core   +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

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

On the tree-width of knot diagrams

open access: yesJournal of Computational Geometry, 2019
We show that a small tree-decomposition of a knot diagram induces a small sphere-decomposition of the corresponding knot. This, in turn, implies that the knot admits a small essential planar meridional surface or a small bridge sphere.
Saul Schleimer   +3 more
doaj   +1 more source

The treewidth and pathwidth of hypercubes

open access: yesDiscrete Mathematics, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
L. Sunil Chandran, Telikepalli Kavitha
openaire   +1 more source

On the Complexity of Embedding in Graph Products

open access: yesComputing in Geometry and Topology
Graph embedding, especially as a subgraph of a grid, is an old topic in VLSI design and graph drawing. In this paper, we investigate related questions concerning the complexity of embedding a graph G in a host graph that is the strong product of a path ...
Therese Biedl   +2 more
doaj   +1 more source

The algorithmic theory of treewidth

open access: yesElectronic Notes in Discrete Mathematics, 2000
Abstract Treewidth is a graph measure with several applications. In this abstract, it is discussed that many otherwise intractable problems become polynomial or linear time solvable when restricted to graphs of bounded treewidth, and some other algorithmic results that use treewidth (e.g., applied to planar graphs) are discussed.
openaire   +1 more source

Contraction obstructions for treewidth

open access: yesJournal of Combinatorial Theory, Series B, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Fedor V. Fomin   +2 more
openaire   +3 more sources

Automated design of dynamic programming schemes for RNA folding with pseudoknots. [PDF]

open access: yesAlgorithms Mol Biol, 2023
Marchand B   +4 more
europepmc   +1 more source

A Note on Directed Treewidth

open access: yesCoRR, 2019
We characterise digraphs of directed treewidth one in terms of forbidden butterfly minors. Moreover, we show that there is a linear relation between the hypertree-width of the dual of the cycle hypergraph of D, i. e. the hypergraph with vertices V (D) where every hyperedge corresponds to a directed cycle in D, and the directed treewidth of D.
openaire   +2 more sources

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