Results 71 to 80 of about 16,063 (299)

Chaos in Topological Modules

open access: yesAxioms, 2022
Chaotic and pathological phenomena in topological modules are studied in this manuscript. In particular, constructions of noncontinuous linear functionals are provided for a wide variety of topological modules.
Francisco Javier García-Pacheco
doaj   +1 more source

Fuzzy Closure Operators

open access: yesJournal of Mathematical Analysis and Applications, 2001
For a set \(X\) and a complete residuated lattice \(L\), the author introduces and investigates graduated closure operators \(L^X\to L^X\), closure systems \(\subseteq L^X\) and systems of ``almost closed fuzzy sets'' \(L^X\to L\) in \(X\). He shows that they characterize each other and studies the relationship to fuzzy Galois connections.
openaire   +2 more sources

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

open access: yesFEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil   +4 more
wiley   +1 more source

On closure operators of Jonsson sets

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы
The work is related to the study of the model-theoretic properties of Jonsson theories, which, generally speaking, are not complete. In the article, on the Boolean of Jonsson subsets of the semantic model of some fixed Jonsson theory, the concept of the
Olga Ulbrikht
doaj   +1 more source

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

open access: yesFEBS Letters, EarlyView.
Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley   +1 more source

On regular and homological closure operators [PDF]

open access: yes, 2009
Observing that weak heredity of regular closure operators in Top and of homological closure operators in homological categories identifies torsion theories, we study these closure operators in parallel, showing that regular closure operators play the ...
Clementino, Maria Manuel   +1 more
core  

Interior and closure operators on residuated ordered semigroup(剩余序半群的内部和闭包算子)

open access: yesZhejiang Daxue xuebao. Lixue ban
In this paper, the concept of inner and closure operators on residuated ordered semigroups is introduced, some of their related algebraic properties are studied.
李毅君(LI Yijun)   +1 more
doaj   +1 more source

Composition Operators and the Closure of Morrey Space in the Bloch Space

open access: yesJournal of Function Spaces, 2019
In this paper, we characterize the closure of the Morrey space in the Bloch space. Furthermore, the boundedness and compactness of composition operators from the Bloch space to the closure of the Morrey space in the Bloch space are investigated.
Nanhui Hu, Xiangling Zhu
doaj   +1 more source

On φ 1,2-countable compactness and filters

open access: yesApplied General Topology, 2003
In this work the author investigates some relations between φ 1,2-countable compactness, filters, sequences and φ 1,2-closure operators.
T.H. Yalvaç
doaj   +1 more source

Entropy of Closure Operators

open access: yesCoRR, 2013
arXiv admin note: substantial text overlap with arXiv:1209 ...
openaire   +2 more sources

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