Results 31 to 40 of about 18,631,792 (285)

Fuzzy Operator Ideals

open access: yesJournal of Applied Science and Engineering, 2022
Although the systematic emergence of the fuzzy functional analysis theory has started in the last few years, we are starting to construct a new theory of fuzzy operator ideals inspired by the classical (crisp) operator ideals theory.
Laith K. Shaakir   +2 more
doaj   +1 more source

P-ideal dichotomy and weak squares

open access: yesThe Journal of Symbolic Logic, 2013
AbstractWe answer a question of Cummings and Magidor by proving that the P-ideal dichotomy of Todorčević refutes □κ,ωfor any uncountableκ. We also show that the P-ideal dichotomy implies the failure of □κ,<bprovided that cf(κ) >ω1.
openaire   +3 more sources

Hechler's Theorem for tall analytic P-ideals

open access: yesThe Journal of Symbolic Logic, 2011
AbstractWe prove the following version of Hechler's classical theorem: For each partially ordered set (Q, ≤) with the property that every countable subset of Q has a strict upper bound in Q, there is a ccc forcing notion such that in the generic extension for each tall analytic P-ideal (coded in the ground model) a cofinal subset of is order ...
openaire   +2 more sources

Some characterizations of (¯∈γ, ¯∈γ v ¯qδ)-fuzzy fantastic ideals in BCH-algebras - doi: 10.4025/actascitechnol.v35i1.15897

open access: yesActa Scientiarum: Technology, 2013
In this paper, the concepts of (∈γ,∈γ vqδ)-fuzzy fantastic ideals and (¯∈γ, ¯∈γ v ¯qδ)-fuzzy fantastic ideals in BCH-algebras are introduced and investigate some of their properties. 
Muhammad Zulfiqar
doaj   +1 more source

Maximal ideals in the algebra of operators on certain Banach spaces. [PDF]

open access: yes, 2002
For a Banach space $\mathfrak{X}$, let $\mathcal{B}(\mathfrak{X})$ denote the Banach algebra of all continuous linear operators on $\mathfrak{X}$. First, we study the lattice of closed ideals in $\mathcal{B}(\mathfrak{J}_p)$, where $1 < p < \infty$ and $\
Laustsen, Niels Jakob   +1 more
core  

Note on $ p $-ideals set of orthomodular lattices

open access: yesAIMS Mathematics
<p>This paper mainly discusses the problems raised in Kalmbach's book: When are the $ p $-ideals of an irreducible orthomodular lattice well ordered under set inclusion? We give three classes of orthomodular lattices whose $ p $-ideals set is a chain under set inclusion. Furthermore, this article also provides a sufficient and necessary condition
Ziteng Zhao, Jing Wang, Yali Wu
openaire   +2 more sources

Reciprocal control of viral infection and phosphoinositide dynamics

open access: yesFEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

[Letter from Ideals Publishing Company to T. N. Carswell]

open access: yes, 1958
A letter written to Mr. T. N. Carswell, Abilene, Texas, from Ideals Publishing Co., Milwaukee 1, Wisconsin.
Ideals Publishing Company
core   +3 more sources

Regularity of n-P-V-Rings and n-P-V’-Rings

open access: yesAxioms
The regularity of the n-P-V-rings and n-P-V’-rings is systematically investigated in this paper. Employing the notions of quasi-ideals, weakly left (or right) ideals, and generalized weak ideals, we focus on investigating the strong π-regularity and weak
Liuwen Li, Wenlin Zou, Ying Li
doaj   +1 more source

On the Intersection Graphs Associeted to Posets

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2020
Let (P, ≤) be a poset with the least element 0. The intersection graph of ideals of P, denoted by G(P), is a graph whose vertices are all nontrivial ideals of P and two distinct vertices I and J are adjacent if and only if I ∩ J ≠ {0}.
Afkhami M.   +2 more
doaj   +1 more source

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