Results 71 to 80 of about 1,930 (230)
iMetaOmics, EarlyView.This study investigates the risk of thrombotic microangiopathy (TMA) induced by vascular endothelial growth factor (VEGF) and vascular endothelial growth factor receptor (VEGFR) inhibitors in cancer therapy. Using data from the FDA Adverse Event Reporting System (FAERS), the WHO Global Database for Adverse Drug Reactions (Vigibase), and The Cancer ...
Aimin Jiang +7 more
wiley +1 more source
Inheritance principles for chordal graphs
Linear Algebra and its Applications, 1991 AbstractWe prove two results concerning positive completions of partial positive matrices. First, we give a parametrization of all positive invertible completions of a partial positive matrix having as support a chordal graph, along a fixed increasing chordal sequence.
Tiberiu Constantinescu, Mihai Bakonyi
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Generating Subgraphs in Chordal Graphs
, 2023 13 pages, 1 figure.
Levit, Vadim E., Tankus, David
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Hyperbolicity and Chordality of a Graph [PDF]
The Electronic Journal of Combinatorics, 2011 Let $G$ be a connected graph with the usual shortest-path metric $d$. The graph $G$ is $\delta$-hyperbolic provided for any vertices $x,y,u,v$ in it, the two larger of the three sums $d(u,v)+d(x,y),d(u,x)+d(v,y)$ and $d(u,y)+d(v,x)$ differ by at most $2\delta.$ The graph $G$ is $k$-chordal provided it has no induced cycle of length greater than $k ...
Yaokun Wu, Chengpeng Zhang
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Conformal Hypergraphs: Duality and Implications for the Upper Clique Transversal Problem
Journal of Graph Theory, EarlyView.ABSTRACT Given a hypergraph H ${\rm{ {\mathcal H} }}$, the dual hypergraph of H ${\rm{ {\mathcal H} }}$ is the hypergraph of all minimal transversals of H ${\rm{ {\mathcal H} }}$. The dual hypergraph is always Sperner, that is, no hyperedge contains another.
Endre Boros +3 more
wiley +1 more source
The Topological Connectivity of the Independence Complex of Circular-Arc Graphs
Universal Journal of Mathematics and Applications, 2019 Let us denoted the topological connectivity of a simplicial complex $C$ plus 2 by $\eta(C)$. Let $\psi$ be a function from class of graphs to the set of positive integers together with $\infty$. Suppose $\psi$ satisfies the following properties: \newline
Yousef Abd Algani
doaj +1 more source
Secular Changes in Craniofacial Morphology Over the Last 2000 Years in Milan, Italy
International Journal of Osteoarchaeology, EarlyView.ABSTRACT This study aims to analyze secular changes in craniofacial morphology over 2000 years in Milan, examining variations in cranial dimensions across historical periods and between sexes. It utilizes standard anthropometric techniques to provide insights into the evolution of craniofacial morphology within this urban population. The study includes
Lucie Biehler‐Gomez +4 more
wiley +1 more source
On the 2-token graph of a graph
AKCE International Journal of Graphs and Combinatorics, 2020 Let be a graph and let be a positive integer. Let = and . The -token graph is the graph with vertex set and two vertices and are adjacent if and , where denotes the symmetric difference. In this paper we present several basic results on 2-token graphs.
J. Deepalakshmi +3 more
doaj +1 more source
On a Class of Graphs with Large Total Domination Number [PDF]
Discrete Mathematics & Theoretical Computer Science, 2018 Let $\gamma(G)$ and $\gamma_t(G)$ denote the domination number and the total domination number, respectively, of a graph $G$ with no isolated vertices. It is well-known that $\gamma_t(G) \leq 2\gamma(G)$.
Selim Bahadır, Didem Gözüpek
doaj +1 more source
Treewidth for graphs with small chordality
Discrete Applied Mathematics, 1997 AbstractA graph G is K-chordal, if it does not contain chordless cycles of length larger than k. The chordality lc of a graph G is the minimum k for which G is k-chordal. The degeneracy or the width of a graph is the maximum min-degree of any of its subgraphs.
Dimitrios M. Thilikos +1 more
openaire +3 more sources