Results 61 to 70 of about 1,281,596 (279)

A study of new dimensions for ideal topological spaces

open access: yesApplied General Topology
In this paper new notions of dimensions for ideal topological spaces are inserted, called *-quasi covering dimension and ideal quasi covering dimension.
Fotini Sereti
doaj   +1 more source

On covering expander graphs by Hamilton cycles [PDF]

open access: yes, 2011
The problem of packing Hamilton cycles in random and pseudorandom graphs has been studied extensively. In this paper, we look at the dual question of covering all edges of a graph by Hamilton cycles and prove that if a graph with maximum degree $\Delta ...
Glebov, Roman   +2 more
core  

D-spaces and covering properties

open access: yesTopology and its Applications, 2005
A neighbourhood assignment on a topological space is a mapping \(\phi\) of \(X\) into the topology \(\tau\) of \(X\) such that \(x\in \phi(x)\) for each \(x \in X\). A space \(X\) is a D-space if, for every neighbourhood assignment \(\phi\) on \(X\), there exists a locally finite (in \(X\)) subset \(A\) of \(X\) such that the family \(\phi(A)\) covers \
openaire   +2 more sources

COMP–PMEPA1 axis promotes epithelial‐to‐mesenchymal transition in breast cancer cells

open access: yesMolecular Oncology, EarlyView.
This study reveals that cartilage oligomeric matrix protein (COMP) promotes epithelial‐to‐mesenchymal transition (EMT) in breast cancer. We identify PMEPA1 (protein TMEPAI) as a novel COMP‐binding partner that mediates EMT via binding to the TSP domains of COMP, establishing the COMP–PMEPA1 axis as a key EMT driver in breast cancer.
Konstantinos S. Papadakos   +6 more
wiley   +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

On Some Types of Multigranulation Covering Based on Binary Relations

open access: yesJournal of Function Spaces, 2021
Recently, the notions of right and left covering rough sets were constructed by right and left neighborhoods to propose four types of multigranulation covering rough set (MGCRS) models.
Ashraf Nawar, E. A. Elsakhawy
doaj   +1 more source

Deciphering transcriptional plasticity in pancreatic ductal adenocarcinoma reveals alterations in sensory neuron innervation

open access: yesMolecular Oncology, EarlyView.
Pancreatic sensory neurons innervating healthy and PDAC tissue were retrogradely labeled and profiled by single‐cell RNA sequencing. Tumor‐associated innervation showed a dominant neurofilament‐positive subtype, altered mitochondrial gene signatures, and reduced non‐peptidergic neurons.
Elena Genova   +14 more
wiley   +1 more source

Characterization of Covering Dimension

open access: yesمجلة علوم ذي قار, 2019
        The present study focus and define a new kind of covering dimension and show some relations with other concepts using the ( ) sets in topological space. The current paper obtain some properties and characterization of this covering dimension. 
Nedaa Hasan Hajee
doaj   +4 more sources

Certain Types of Covering-Based Multigranulation (ℐ,T)-Fuzzy Rough Sets with Application to Decision-Making

open access: yesComplexity, 2020
As a generalization of Zhan’s method (i.e., to increase the lower approximation and decrease the upper approximation), the present paper aims to define the family of complementary fuzzy β-neighborhoods and thus three kinds of covering-based ...
Jue Ma   +3 more
doaj   +1 more source

Mycobacterial cell division arrest and smooth‐to‐rough envelope transition using CRISPRi‐mediated genetic repression systems

open access: yesFEBS Open Bio, EarlyView.
CRISPRI‐mediated gene silencing and phenotypic exploration in nontuberculous mycobacteria. In this Research Protocol, we describe approaches to control, monitor, and quantitatively assess CRISPRI‐mediated gene silencing in M. smegmatis and M. abscessus model organisms.
Vanessa Point   +7 more
wiley   +1 more source

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