Results 31 to 40 of about 1,323,506 (183)

A Survey on Valdivia Open Question on Nikodým Sets

open access: yesMathematics, 2022
Let A be an algebra of subsets of a set Ω and ba(A) the Banach space of bounded finitely additive scalar-valued measures on A endowed with the variation norm. A subset B of A is a Nikodým set for ba(A) if each countable B-pointwise bounded subset M of ba(
Salvador López-Alfonso   +3 more
doaj   +1 more source

Uniform Bounds for Limited Sets and Applications to Bounding Sets.

open access: yesMATHEMATICA SCANDINAVICA, 2000
A set \(D\) in a Banach space \(E\) is called limited if every \(w^\ast\)-null sequence \((\phi_k)_k\) in the dual space \(E^\ast\) converges uniformly on \(D\). Relatively compact sets are limited, and the converse happpens when \(E\) is separable [see \textit{J.
openaire   +2 more sources

New Generalizations of Set Valued Interpolative Hardy-Rogers Type Contractions in b-Metric Spaces

open access: yesJournal of Function Spaces, 2021
Debnath and De La Sen introduced the notion of set valued interpolative Hardy-Rogers type contraction mappings on b-metric spaces and proved that on a complete b-metric space, whose all closed and bounded subsets are compact, the set valued interpolative
Muhammad Usman Ali   +2 more
doaj   +1 more source

A Priori Bounds for Boundary Sets [PDF]

open access: yesProceedings of the American Mathematical Society, 1971
Consider y = f ( t , y , y ′ ) y = f(t,y,y’) with boundary conditions ( 0 , y ( 0 ) , y ′ ( 0 ) ) ∈ S
Bebernes, J. W., Fraker, R.
openaire   +2 more sources

Literature Nots on Bornological Set and Bornological Group

open access: yesAcademic Science Journal
            In this work, we explain the basic concepts of bornological structures bornological sets and bornological groups, that solve the problems of boundedness for sets and groups.  with some examples and fundamental construction for this structure
Anwar Nooruldeen Imran AI-SAIHI   +3 more
doaj   +1 more source

On a safety set for an epidemic model with a bounded population

open access: yesMathematical Modelling and Analysis, 2022
Given a class of non-linear SIRS epidemic model, we analyse some useful conditions on the model parameters to determine a safety set for the containment of an epidemic.
Carmen Coll   +2 more
doaj   +1 more source

Joint and Generalized Spectral Radius of Upper Triangular Matrices with Entries in a Unital Banach Algebra [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2020
In this paper, we discuss some properties of joint spectral {radius(jsr)} and  generalized spectral radius(gsr)  for a finite set of upper triangular matrices with entries in a Banach algebra and represent relation between geometric and joint/generalized
Hamideh Mohammadzadehkan   +2 more
doaj   +1 more source

On a question of Eremenko concerning escaping components of entire functions

open access: yes, 2006
Let f be an entire function with a bounded set of singular values, and suppose furthermore that the postsingular set of f is bounded. We show that every component of the escaping set I(f) is unbounded.
Rempe, Lasse
core   +3 more sources

Fuzzy Filter Spectrum of a BCK Algebra

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2011
The notion of fuzzy s-prime filters of a bounded BCK-algebra is introduced. We discuss the relation between fuzzy s-prime filters and fuzzy prime filters.
Xiao Long Xin, Wei Ji, Xiu Juan Hua
doaj   +1 more source

New bounds on cap sets [PDF]

open access: yesJournal of the American Mathematical Society, 2012
New version: The most substantive change is the correction of our overstatement of the efficacy of the asymmetric Balog-Szemeredi-Gowers lemma.
Bateman, Michael, Katz, Nets Hawk
openaire   +3 more sources

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