Results 71 to 80 of about 197 (101)
γ-Inverse graph of some mixed graphs
Special MatricesLet GG be a graph. Then, the inverse graph G−1{G}^{-1} of GG is defined to be a graph that has adjacency matrix similar to the inverse of the adjacency matrix of GG, where the similarity matrix is ±1\pm 1 diagonal matrix. In this article, we introduced a
Boulahmar Wafa +2 more
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Causal structure learning in directed, possibly cyclic, graphical models
Journal of Causal InferenceWe consider the problem of learning a directed graph G⋆{G}^{\star } from observational data. We assume that the distribution that gives rise to the samples is Markov and faithful to the graph G⋆{G}^{\star } and that there are no unobserved variables.
Semnani Pardis, Robeva Elina
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γ-Cycles In Arc-Colored Digraphs
Discussiones Mathematicae Graph Theory, 2016 We call a digraph D an m-colored digraph if the arcs of D are colored with m colors. A directed path (or a directed cycle) is called monochromatic if all of its arcs are colored alike.
Galeana-Sánchez Hortensia +2 more
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Sub-exponential Time Parameterized Algorithms for Graph Layout Problems on Digraphs with Bounded Independence Number. [PDF]
Algorithmica, 2023 Misra P, Saurabh S, Sharma R, Zehavi M.
europepmc +1 more source
A branch-and-cut algorithm for the target visitation problem
EURO Journal on Computational Optimization, 2019 In this paper, we consider the target visitation problem (TVP) which arises in the context of disaster treatment. Mathematically speaking, the problem is concerned with finding a route to visit a set of targets starting from and returning to some base ...
Achim Hildenbrandt
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The hybrid number of a ploidy profile. [PDF]
J Math Biol, 2022 Huber KT, Maher LJ.
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A new bound for the spectral radius of Brualdi-Li matrices
Special Matrices, 2015 Let B2m denote the Brualdi-Li matrix of order 2m, and let ρ2m = ρ(B2m ) denote the spectral radius of the Brualdi-Li Matrix ...
Chen Xiaogen
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Intake of Calanus finmarchicus oil for 12 weeks improves omega-3 index in healthy older subjects engaging in an exercise programme. [PDF]
Br J Nutr, 2021 Wasserfurth P +5 more
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Cycle Partitions in Dense Regular Digraphs and Oriented Graphs
Forum of Mathematics, SigmaA conjecture of Jackson from 1981 states that every d-regular oriented graph on n vertices with $n\leq 4d+1$ is Hamiltonian. We prove this conjecture for sufficiently large n.
Allan Lo +2 more
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Some new sharp bounds for the spectral radius of a nonnegative matrix and its application. [PDF]
J Inequal Appl, 2017 He J, Liu YM, Tian JK, Liu XH.
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