Results 11 to 20 of about 842,486 (276)

Classes of graphs with restricted interval models [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 1999
We introduce q-proper interval graphs as interval graphs with interval models in which no interval is properly contained in more than q other intervals, and also provide a forbidden induced subgraph characterization of this class of graphs.
Andrzej Proskurowski, Jan Arne Telle
doaj   +2 more sources

On central max-point-tolerance graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
Max-point-tolerance graphs (MPTG) were studied by Catanzaro et al. in 2017 and the same class of graphs were introduced in the name of p-BOX(1) graphs by Soto and Caro in 2015.
Sanchita Paul
doaj   +1 more source

Energy and Spectrum Analysis of Interval Valued Neutrosophic Graph using MATLAB [PDF]

open access: yesNeutrosophic Sets and Systems, 2019
In recent time graphical analytics of uncertainty and indeterminacy has become major concern for data analytics researchers. In this direction, the mathematical algebra of neutrosophic graph is extended to interval-valued neutrosophic graph.
Said Broumi   +4 more
doaj   +1 more source

The power of interval models for computing graph centralities [PDF]

open access: yesRevista Română de Informatică și Automatică, 2022
Food webs, some scheduling problems and DNA molecules all have in common a “linear structure” which can be captured through the idealized model of interval graphs (intersection graphs of intervals on a line).
Guillaume DUCOFFE
doaj   +1 more source

Linear-Time Algorithms for Finding Tucker Submatrices and Lekkerkerker-Boland Subgraphs [PDF]

open access: yes, 2013
Lekkerkerker and Boland characterized the minimal forbidden induced subgraphs for the class of interval graphs. We give a linear-time algorithm to find one in any graph that is not an interval graph. Tucker characterized the minimal forbidden submatrices
Lindzey, Nathan, McConnell, Ross M.
core   +1 more source

An Extension of Fuzzy Competition Graph and Its Uses in Manufacturing Industries

open access: yesMathematics, 2020
Competition graph is a graph which constitutes from a directed graph (digraph) with an edge between two vertices if they have some common preys in the digraph.
Tarasankar Pramanik   +3 more
doaj   +1 more source

Median eigenvalues of bipartite subcubic graphs [PDF]

open access: yes, 2013
It is proved that the median eigenvalues of every connected bipartite graph $G$ of maximum degree at most three belong to the interval $[-1,1]$ with a single exception of the Heawood graph, whose median eigenvalues are $\pm\sqrt{2}$.
Mohar, Bojan
core   +1 more source

Algorithms for optimal min hop and foremost paths in interval temporal graphs

open access: yesApplied Network Science, 2022
Path problems are fundamental to the study of graphs. Temporal graphs are graphs in which the edges connecting the vertices change with time. Min hop paths problem in a temporal graph is the problem of finding time respecting paths from source vertex to ...
Anuj Jain, Sartaj K. Sahni
doaj   +1 more source

L-space intervals for Graph Manifolds and Cables [PDF]

open access: yes, 2016
We present a graph manifold analog of the Jankins-Neumann classification of Seifert fibered spaces over $S^2$ admitting taut foliations, providing a finite recursive formula to compute the L-space Dehn-filling interval for any graph manifold with torus ...
Rasmussen, Sarah Dean
core   +1 more source

OBDD-Based Representation of Interval Graphs [PDF]

open access: yes, 2013
A graph $G = (V,E)$ can be described by the characteristic function of the edge set $\chi_E$ which maps a pair of binary encoded nodes to 1 iff the nodes are adjacent. Using \emph{Ordered Binary Decision Diagrams} (OBDDs) to store $\chi_E$ can lead to a (
B. Bollig   +22 more
core   +1 more source

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