Publication

Finding Hamiltonian circuits in quasi-adjoint graphs

Dominique de Werra, Benjamin Leroy-Beaulieu
2008
Conference Papers

Résumé

This paper is motivated by a method used for DNA sequencing by hybridization presented in [Jacek Blazewicz, Marta Kasprzak, Computational complexity of isothernnic DNA sequencing by hybridization, Discrete Appl. Math. 154 (5) (2006) 718-7291. This paper presents a class of digraphs: the quasi-adjoint graphs. This class includes the ones used in the paper cited above. A polynomial recognition algorithm in O(n(3)), as well as a polynomial algorithm in O(n(2) + m(2)) for finding a Hamiltonian circuit in these graphs are given. Furthermore, some results about related problems such as finding a Eulerian circuit while respecting some forbidden transitions (a path with three vertices) are discussed. (c) 2008 Elsevier B.V. All rights reserved.

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https://infoscience.epfl.ch/entities/publication/23925710-95df-41e3-a797-72d62ea89684

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Dominique de Werra, Benjamin Leroy-Beaulieu
2008
Conference Papers

Résumé

Source officielle

https://infoscience.epfl.ch/entities/publication/23925710-95df-41e3-a797-72d62ea89684

À propos de ce résultat

Proximité ontologique

Mathématiques

Mathématiques discrètes: Théorie des graphes

Concepts associés (32)

Hamiltonian path

In the mathematical field of graph theory, a Hamiltonian path (or traceable path) is a path in an undirected or directed graph that visits each vertex exactly once. A Hamiltonian cycle (or Hamiltonian circuit) is a cycle that visits each vertex exactly once. A Hamiltonian path that starts and ends at adjacent vertices can be completed by adding one more edge to form a Hamiltonian cycle, and removing any edge from a Hamiltonian cycle produces a Hamiltonian path.

Hamiltonian path problem

In the mathematical field of graph theory the Hamiltonian path problem and the Hamiltonian cycle problem are problems of determining whether a Hamiltonian path (a path in an undirected or directed graph that visits each vertex exactly once) or a Hamiltonian cycle exists in a given graph (whether directed or undirected). Both problems are NP-complete.

Line graph

En théorie des graphes, le line graph L(G) d'un graphe non orienté G, est un graphe qui représente la relation d'adjacence entre les arêtes de G. Le nom line graph vient d'un article de Harary et Norman publié en 1960. La même construction avait cependant déjà été utilisée par Whitney en 1932 et Krausz en 1943. Il est également appelé graphe adjoint. Un des premiers et des plus importants théorèmes sur les line graphs est énoncé par Hassler Whitney en 1932, qui prouve qu'en dehors d'un unique cas exceptionnel, la structure de G peut être entièrement retrouvée à partir de L(G) dans le cas des graphes connexes.

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