Results 61 to 70 of about 17,750 (263)

On Laplacian Equienergetic Signed Graphs

open access: yesJournal of Mathematics, 2021
The Laplacian energy of a signed graph is defined as the sum of the distance of its Laplacian eigenvalues from its average degree. Two signed graphs of the same order are said to be Laplacian equienergetic if their Laplacian energies are equal.
Qingyun Tao, Lixin Tao
doaj   +1 more source

On the distance spectrum of certain distance biregular graphs

open access: yesThe American Journal of Combinatorics, 2023
In this article we present an infinite family of bipartite distance biregular graphs having an arbitrarily large diameter and whose distance matrices have exactly four distinct eigenvalues. This result answers a question posed by F.
Miriam Abdon   +2 more
doaj   +1 more source

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

open access: yesMolecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau   +36 more
wiley   +1 more source

Cycle Double Covers of Infinite Planar Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2016
In this paper, we study the existence of cycle double covers for infinite planar graphs. We show that every infinite locally finite bridgeless k-indivisible graph with a 2-basis admits a cycle double cover.
Javaheri Mohammad
doaj   +1 more source

On Resolvability- and Domination-Related Parameters of Complete Multipartite Graphs

open access: yesMathematics, 2022
Graphs of order n with fault-tolerant metric dimension n have recently been characterized.This paper points out an error in the proof of this characterization. We show that the complete multipartite graphs also have the fault-tolerant metric dimension n,
Sakander Hayat, Asad Khan, Yubin Zhong
doaj   +1 more source

Interrogating the immune landscape of microsatellite stable RAS‐mutated colon cancer

open access: yesMolecular Oncology, EarlyView.
COLOSSUS project RAS‐mutated MSS colon cancer study explored transcriptomics and immune cell density by immunohistochemistry (IHC), Immunoscore (IS), ISIC/TuLIS scores, mutation counts, and detected different prevalences but similar microenvironment composition across immune markers with clinical relevance for future immunotherapy combination ...
Rodrigo Dienstmann   +61 more
wiley   +1 more source

On cyclic orthogonal double covers of circulant graphs by special infinite graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2017
In this article, a technique to construct cyclic orthogonal double covers (CODCs) of regular circulant graphs by certain infinite graph classes such as complete bipartite and tripartite graphs and disjoint union of butterfly and is introduced.
R. El-Shanawany, A. El-Mesady
doaj   +1 more source

Spectra of the extended neighborhood corona and extended corona of two graphs

open access: yesElectronic Journal of Graph Theory and Applications, 2016
In this paper we define extended corona and extended neighborhoodcorona of two graphs $G_{1}$ and $G_{2}$, which are denoted by$G_{1}\bullet G_{2}$ and $G_{1}\ast G_{2}$ respectively.
Chandrashekar Adiga   +2 more
doaj   +1 more source

Context-Sensitive Languages, Rational Graphs and Determinism [PDF]

open access: yesLogical Methods in Computer Science, 2006
We investigate families of infinite automata for context-sensitive languages. An infinite automaton is an infinite labeled graph with two sets of initial and final vertices.
Arnaud Carayol, Antoine Meyer
doaj   +1 more source

Reconstruction of infinite graphs

open access: yesDiscrete Mathematics, 1991
The paper surveys results concerning reconstruction and edge- reconstructon of infinite graphs and draws attention to several interesting unsolved problems.
openaire   +2 more sources

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