Results 51 to 60 of about 805,669 (72)
Stability of Critical p-Improper Interval Graphs [PDF]
Congressus Numerantium, 2017, Volume 228, 2019 A $p$-improper interval graph is an interval graph that has an interval representation in which no interval contains more than $p$ other intervals. A critical $p$-improper interval graph is $p-1$ improper when any vertex is removed. In this paper we investigate the spectrum of impropriety of critical $p$-improper interval graphs upon the removal of a ...
arxiv
CHOICE OF SHORT-TERM CONSTANT CONFIGURATION OF THE DISTRIBUTION NETWORK
Известия высших учебных заведений: Проблемы энергетики, 2019 The work studies a possibility of choice for a given interval of changing the load power and the capacity of renewable generation sources of such a constant configuration of the primary distribution network, at which the energy losses differ minimally ...
I. I. Golub +3 more
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Integer symmetric matrices having all their eigenvalues in the interval [-2,2] [PDF]
arXiv, 2007 We completely describe all integer symmetric matrices that have all their eigenvalues in the interval [-2,2]. Along the way we classify all signed graphs, and then all charged signed graphs, having all their eigenvalues in this same interval. We then classify subsets of the above for which the integer symmetric matrices, signed graphs and charged ...
arxiv
IEEE Access, 2019 Data envelopment analysis (DEA) is a model for evaluating the effectiveness of relative effectiveness of decision-making units with multiple input and output data based on non-parametric modeling using mathematical programming (including linear ...
Mengdi Xu +3 more
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Closed orders and closed graphs [PDF]
arXiv, 2015 The class of closed graphs by a linear ordering on their sets of vertices is investigated. A recent characterization of such a class of graphs is analyzed by using tools from the proper interval graph theory.
arxiv
Dichotomization: 2 × 2 (×2 × 2 × 2...) categories: infinite possibilities
BMC Medical Research Methodology, 2010 Background Consumers of epidemiology may prefer to have one measure of risk arising from analysis of a 2-by-2 table. However, reporting a single measure of association, such as one odds ratio (OR) and 95% confidence interval, from a continuous exposure ...
Burstyn Igor +3 more
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Geometric random graphs and Rado sets of continuous functions
Discrete Analysis, 2021 Geometric random graphs and Rado sets of continuous functions, Discrete Analysis 2021:3, 21 pp. For several reasons, random graphs play a central role in the theory of finite graphs.
Anthony Bonato +2 more
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The interval number of a planar graph is at most three [PDF]
arXiv, 2018 The interval number of a graph $G$ is the minimum $k$ such that one can assign to each vertex of $G$ a union of $k$ intervals on the real line, such that $G$ is the intersection graph of these sets, i.e., two vertices are adjacent in $G$ if and only if the corresponding sets of intervals have non-empty intersection.
arxiv
The Crystallographic, Spectroscopic and Theoretical Studies on (E)-2-[((4-fluorophenyl)imino)methyl]-4-nitrophenol and (E)-2-[((3-fluorophenyl)imino)methyl]-4-nitrophenol Compounds [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 2018 In this study, two new salicylideneaniline derivative compounds which are an isomer of each other have been synthesized and characterized by X-Ray Diffraction (XRD) technique, IR spectroscopy, and theoretical method.
Güneş Demirtaş +3 more
doaj
Frontiers in Systems Neuroscience, 2010 Modularity is a fundamental concept in systems neuroscience, referring to the formation of local cliques or modules of densely intra-connected nodes that are sparsely inter-connected with nodes in other modules. Topological modularity of brain functional
Aaron F Alexander-Bloch +11 more
doaj +1 more source