Results 111 to 120 of about 1,027 (141)

The microparticulate inks for bioprinting applications. [PDF]

open access: yesMater Today Bio
An C   +9 more
europepmc   +1 more source

Outerplanar Obstructions for Matroid Pathwidth

open access: yesElectronic Notes in Discrete Mathematics, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Koichi Yamazaki, Dimitrios M Thilikos
exaly   +9 more sources

Pagenumber of pathwidth-k graphs and strong pathwidth-k graphs [PDF]

open access: yesDiscrete Mathematics, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Koichi Yamazaki
exaly   +3 more sources

Experimental Evaluation of a Branch-and-Bound Algorithm for Computing Pathwidth and Directed Pathwidth [PDF]

open access: yesJournal of Experimental Algorithmics, 2016
Path decompositions of graphs are an important ingredient of dynamic programming algorithms for solving efficiently many NP-hard problems. Therefore, computing the pathwidth and associated path decomposition of graphs has both a theoretical and practical interest.
David Coudert   +2 more
exaly   +5 more sources

Approximating the pathwidth of outerplanar graphs

open access: yesInformation Processing Letters, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Michael A Langston
exaly   +4 more sources

CSP duality and trees of bounded pathwidth [PDF]

open access: yesTheoretical Computer Science, 2010
We study non-uniform constraint satisfaction problems definable in monadic Datalog stratified by the use of non-linearity. We show how such problems can be described in terms of homomorphism dualities involving trees of bounded pathwidth and in algebraic terms. For this, we introduce a new parameter for trees that closely approximates pathwidth and can
VÍCTOR Dalmau, Andrei Krokhin
exaly   +4 more sources

From Pathwidth to Connected Pathwidth [PDF]

open access: yesSIAM Journal on Discrete Mathematics, 2012
It is proven that the connected pathwidth of any graph $G$ is at most $2\cdot\pw(G)+1$, where $\pw(G)$ is the pathwidth of $G$. The method is constructive, i.e. it yields an efficient algorithm that for a given path decomposition of width $k$ computes a connected path decomposition of width at most $2k+1$. The running time of the algorithm is $O(dk^2)$,
Dariusz Dereniowski
exaly   +7 more sources

Outerplanar obstructions for matroid pathwidth

open access: yesDiscrete Mathematics, 2014
For each non-negative integer k, we provide all outerplanar obstructions for the class of graphs whose cycle matroid has pathwidth at most k. Our proof combines a decomposition lemma for proving lower bounds on matroid pathwidth and a relation between ...
Koichi Yamazaki, Dimitrios M Thilikos
exaly   +2 more sources

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