Results 31 to 40 of about 1,569,721 (239)

On eulerian and regular perfect path double covers of graphs

open access: bronzeDiscrete Mathematics, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Karen Seyffarth, Chengde Wang
openalex   +3 more sources

Long directed paths in Eulerian digraphs

open access: green, 2021
An old conjecture of Bollob s and Scott asserts that every Eulerian directed graph with average degree $d$ contains a directed cycle of length at least $ (d)$. The best known lower bound for this problem is $ (d^{1/2})$ by Huang, Ma, Shapira, Sudakov and Yuster.
Oliver Janzer   +2 more
openalex   +4 more sources

Critical-edge based tabu search algorithm for solving large-scale multi-vehicle Chinese postman problem [PDF]

open access: yesScientific Reports
The min–max multi-vehicle Chinese postman problem is an NP-hard problem, which is widely used in path planning problems based on road network graphs, such as urban road structure probing planning, urban road underground cavity detection planning, high ...
Jizhou Tang   +3 more
doaj   +2 more sources

Aneulerian digraphs and the determination of those Eulerian digraphs having an odd number of directed Eulerian paths

open access: bronzeDiscrete Mathematics, 1978
AbstractAn antidirected path [3] in a digraph is a path with consecutive edges directed either both towards or both away from their common vertex. An aneulerian digraph is a digraph that contains a closed antidirected path passing through each edge once.
Kenneth A. Berman
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On the complexity of the Eulerian path problem for infinite graphs [PDF]

open access: green
We revisit the problem of algorithmically deciding whether a given infinite connected graph has an Eulerian path, namely, a path that uses every edge exactly once. It has been recently observed that this problem is $D_3^0$-complete for graphs that have a computable description, whereas it is $Π_2^0$-complete for graphs that have a highly computable ...
Nicanor Carrasco-Vargas   +2 more
openalex   +3 more sources

DNA sequence assembly and multiple sequence alignment by an Eulerian path approach.

open access: yesCold Spring Harbor Symposia on Quantitative Biology, 2003
We describe an Eulerian path approach to the DNA fragment assembly that was originated by Idury and Waterman 1995, and then advanced by Pevzner et al. 2001b. This combinatorial approach bypasses the traditional “overlap-layout-consensus” approach and successfully resolved some of the troublesome repeats in practical assembly projects.
Y. Zhang, M. Waterman
semanticscholar   +4 more sources

Eulerian paths and a problem concerning n -arc connected spaces

open access: bronzeTopology and its Applications, 2013
Abstract In this paper we give, in response to a question of Espinoza, Gartside and Mamatelashvili, an example of an n -arc connected (metric) continuum which is not ( n + 1 ) -arc connected for every n ⩾ 7 .
Alessandro Fedeli, Attilio Le Donne
openalex   +4 more sources

Modelling the Eulerian Path Problem using a String Matching Framework

open access: green, 2005
The well-known Eulerian path problem can be solved in polynomial time (more exactly, there exists a linear time algorithm for this problem). In this paper, we model the problem using a string matching framework, and then initiate an algorithmic study on a variant of this problem, called the (2,1)-STRING-MATCH problem (which is actually a generalization
Dragoş Trincă
openalex   +4 more sources

Information in Strings: Enumeration of Eulerian Paths and Eulerian Components in Markov Sequences

open access: green, 2014
In this paper, we evaluate the number of Eulerian circuits that can be obtained by an arbitrary rotation in a Markovian string, i.e., corresponding to a given Markovian type. Since all rotations do not result in an Eulerian circuit, but several of them, called Eulerian components; we also investigate the number of Eulerian components that result from a
Philippe Jacquet, Dimitrios Milioris
openalex   +3 more sources

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