Results 41 to 50 of about 836,691 (279)

Linear rank-width of distance-hereditary graphs II. Vertex-minor obstructions

open access: yes, 2017
In the companion paper [Linear rank-width of distance-hereditary graphs I. A polynomial-time algorithm, Algorithmica 78(1):342--377, 2017], we presented a characterization of the linear rank-width of distance-hereditary graphs, from which we derived an ...
Kanté, Mamadou Moustapha, Kwon, O-joung
core   +3 more sources

Graph Domination in Distance Two

open access: yesDiscussiones Mathematicae Graph Theory, 2005
A subgraph \(D\) of a graph \(G\) is \(k\)-dominating in \(G\) if every vertex of \(G-D\) is of distance \(\leq k\) from a vertex of \(D\). If \(\mathcal D\) is a specified class of graphs, Dom\(_k \mathcal D\) consists of all those graphs \(G\) in which every connected induced subgraph \(H\) has a \(k\)-dominating induced subgraph \(D \in {\mathcal D}\
Bacsó, Gábor   +2 more
openaire   +2 more sources

Linear-Space Approximate Distance Oracles for Planar, Bounded-Genus, and Minor-Free Graphs

open access: yes, 2011
A (1 + eps)-approximate distance oracle for a graph is a data structure that supports approximate point-to-point shortest-path-distance queries. The most relevant measures for a distance-oracle construction are: space, query time, and preprocessing time.
A. Slivkins   +15 more
core   +1 more source

Distance-regular graphs [PDF]

open access: yes, 2016
This is a survey of distance-regular graphs. We present an introduction to distance-regular graphs for the reader who is unfamiliar with the subject, and then give an overview of some developments in the area of distance-regular graphs since the ...
Koolen, Jack H.   +2 more
core   +2 more sources

In vitro models of cancer‐associated fibroblast heterogeneity uncover subtype‐specific effects of CRISPR perturbations

open access: yesMolecular Oncology, EarlyView.
Development of therapies targeting cancer‐associated fibroblasts (CAFs) necessitates preclinical model systems that faithfully represent CAF–tumor biology. We established an in vitro coculture system of patient‐derived pancreatic CAFs and tumor cell lines and demonstrated its recapitulation of primary CAF–tumor biology with single‐cell transcriptomics ...
Elysia Saputra   +10 more
wiley   +1 more source

Some new results on the reciprocal complementary Wiener number of graphs [PDF]

open access: yesContributions to Mathematics, 2022
Ramin Nasiri, Ali Reza Shojaeifard
doaj   +1 more source

On Automorphisms of a Distance-Regular Graph with Intersection Array {125,96,1;1,48,125} [PDF]

open access: yesУчёные записки Казанского университета: Серия Физико-математические науки, 2017
J. Koolen posed the problem of studying distance-regular graphs in which neighborhoods of vertices are strongly regular graphs with the second eigenvalue ≤ t for the given positive integer t.
V.V. Bitkina, A.A. Makhnev
doaj  

Distance independence in graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2011
For a set D of positive integers, we define a vertex set SV (G) to be D-independent if u,v 2 S implies the distance d(u,v) 㘲 D. The D-independence numberD(G) is the maximum cardinality of a D-independent set. In particular, the independence number (G) = {1}(G).
J.Louis Sewell, Peter J. Slater
openaire   +1 more source

Strong sum distance in fuzzy graphs [PDF]

open access: yesSpringerPlus, 2015
In this paper the idea of strong sum distance which is a metric, in a fuzzy graph is introduced. Based on this metric the concepts of eccentricity, radius, diameter, center and self centered fuzzy graphs are studied. Some properties of eccentric nodes, peripheral nodes and central nodes are obtained.
Tom, Mini, Sunitha, Muraleedharan Shetty
openaire   +2 more sources

PARP inhibition and pharmacological ascorbate demonstrate synergy in castration‐resistant prostate cancer

open access: yesMolecular Oncology, EarlyView.
Pharmacologic ascorbate (vitamin C) increases ROS, disrupts cellular metabolism, and induces DNA damage in CRPC cells. These effects sensitize tumors to PARP inhibition, producing synergistic growth suppression with olaparib in vitro and significantly delayed tumor progression in vivo. Pyruvate rescue confirms ROS‐dependent activity.
Nicolas Gordon   +13 more
wiley   +1 more source

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