Results 21 to 30 of about 25,825 (189)

Fatou's theorem for non-commutative measures [PDF]

open access: yesAdvances in Mathematics, 2022
A classical theorem of Fatou asserts that the Radon-Nikodym derivative of any finite positive Borel measure, $ $, with respect to Lebesgue measure on the complex unit circle, is recovered as the non-tangential limits of its Poisson transform in the complex unit disk.
Jury, Michael T., Martin, Robert T. W.
openaire   +3 more sources

Interval-Valued Pseudo Overlap Functions and Application

open access: yesAxioms, 2022
A class of interval-valued OWA operators can be constructed from interval-valued overlap functions with interval-valued weights, which plays an important role in solving multi-attribute decision making (MADM) problems considering interval numbers as ...
Rong Liang, Xiaohong Zhang
doaj   +1 more source

A Unique Common Fixed Point for an Infinity of Set-Valued Maps

open access: yesAnnales Mathematicae Silesianae, 2018
The main purpose of this paper is to establish some common fixed point theorems for single and set-valued maps in complete metric spaces, under contractive conditions by using minimal type commutativity and without continuity.
Bouhadjera Hakima
doaj   +1 more source

Some fixed point theorems for compatible maps

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1993
A collection of fixed point theorems is generalized by replacing hypothesized commutativity or weak commutativity of functions involved by compatibility.
G. jungck, B. E. Rhoades
doaj   +1 more source

An iteration technique and commutativity of rings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1990
Through much shorter proofs, some new commutativity theorems for rings with unity have been obtained. These results either extend or generalize a few well-known theorems. Our method of proof is based on an iteration technique.
H. A. S. Abujabal, M. S. Khan
doaj   +1 more source

On commutativity theorems for rings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1990
Let R be an associative ring with unity. It is proved that if R satisfies the polynomial identity [xny−ymxn,x]=0(m>1,n≥1), then R is commutative. Two or more related results are also obtained.
H. A. S. Abujabal, M. S. Khan
doaj   +1 more source

Unique Common Fixed Point Theorems for Pairs of Hybrid Maps under a New Condition in Partial Metric Spaces

open access: yesDemonstratio Mathematica, 2014
In this paper, we introduce a new condition namely, ‘condition (W.C.C)’ and obtain two unique common fixed point theorems for pairs of hybrid mappings on a partial Hausdorff metric space without using any continuity and commutativity of the mappings.
Rao K. P. R., Rao K. R. K.
doaj   +1 more source

Carrollian approach to 1 + 3D flat holography

open access: yesJournal of High Energy Physics, 2023
The isomorphism between the (extended) BMS4 algebra and the 1 + 2D Carrollian conformal algebra hints towards a co-dimension one formalism of flat holography with the field theory residing on the null-boundary of the asymptotically flat space-time ...
Amartya Saha
doaj   +1 more source

Matching concepts across HOL libraries [PDF]

open access: yes, 2014
Many proof assistant libraries contain formalizations of the same mathematical concepts. The concepts are often introduced (defined) in different ways, but the properties that they have, and are in turn formalized, are the same.
C So   +14 more
core   +2 more sources

Degree of commutativity of infinite groups [PDF]

open access: yes, 2016
First published in Proceedings of the American Mathematical Society in volum 145, number 2, 2016, published by the American Mathematical SocietyWe prove that, in a finitely generated residually finite group of subexponential growth, the proportion of ...
Antolin, Yago   +2 more
core   +2 more sources

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