Results 21 to 30 of about 123,443 (260)
Interior Algebras and Varieties
Journal of Algebra, 1999 The authors consider rings and semigroups with an additional unary operation which mimics the operation of taking the interior of a subset in topological spaces. More precisely, they call a ring or semigroup \(R\) an interior algebra if \(R\) is equipped with a unary operation \(a\mapsto I(a)\) such that \(I(a)I(b)=I(b)I(a)\), \(aI(a)=I(a)\), \(I(I(a))=
Kelarev, A.V., Stokes, T.
openaire +2 more sources
Corona-type theorems and division in some function algebras on planar domains [PDF]
, 2012 Let $A$ be an algebra of bounded smooth functions on the interior of a compact set in the plane. We study the following problem: if $f,f_1,\dots,f_n\in A$ satisfy $|f|\leq \sum_{j=1}^n |f_j|$, does there exist $g_j\in A$ and a constant $N\in\N$ such that
J.B. Garnett +6 more
core +3 more sources
Evolutionary dynamics on a regular networked structured and unstructured multi‐population
International Journal of Robust and Nonlinear Control, EarlyView., 2023 Abstract In this paper, we study collective decision‐making in a multi‐population framework, where groups of individuals represent whole populations that interact by means of a regular network. Each group consists of a number of players and every player can choose between two options.
Wouter Baar +2 more
wiley +1 more source
Deformed General Relativity and Quantum Black Holes Interior
Universe, 2020 Effective models of black holes interior have led to several proposals for regular black holes. In the so-called polymer models, based on effective deformations of the phase space of spherically symmetric general relativity in vacuum, one considers a ...
Denis Arruga +2 more
doaj +1 more source
Mathematics, 2021 In this paper, we review two related aspects of field theory: the modeling of the fields by means of exterior algebra and calculus, and the derivation of the field dynamics, i.e., the Euler–Lagrange equations, by means of the stationary action principle.
Ivano Colombaro +2 more
doaj +1 more source
Elementos de álgebra de Cristiano Benedito Ottonni
Revista Histedbr On-line, 2015 O presente estudo tem por objetivo estabelecer a análise de um compêndio de Álgebra, a saber, "Elementos de Álgebra", de Cristiano Benedito Ottoni, adotado nos Programas de Ensino do Colégio Pedro II, no período de 1856-1870.
Elaine Cristina Luiz +1 more
doaj +1 more source
Roughness in Lattice Ordered Effect Algebras
The Scientific World Journal, 2014 Many authors have studied roughness on various algebraic systems. In this paper, we consider a lattice ordered effect algebra and discuss its roughness in this context.
Xiao Long Xin, Xiu Juan Hua, Xi Zhu
doaj +1 more source
On higher-spin points and infinite distances in conformal manifolds
Journal of High Energy Physics, 2023 Distances in the conformal manifold, the space of CFTs related by marginal deformations, can be measured in terms of the Zamolodchikov metric. Part of the CFT Distance Conjecture posits that points in this manifold where part of the spectrum becomes free,
Florent Baume, José Calderón-Infante
doaj +1 more source
A K-Theoretic Proof of Boutet de Monvel's Index Theorem for Boundary Value Problems [PDF]
, 2005 We study the C*-closure A of the algebra of all operators of order and class zero in Boutet de Monvel's calculus on a compact connected manifold X with non-empty boundary.
Atiyah M. F. +5 more
core +4 more sources
An efficient deep learning model for brain tumour detection with privacy preservation
CAAI Transactions on Intelligence Technology, EarlyView., 2023 Abstract Internet of medical things (IoMT) is becoming more prevalent in healthcare applications as a result of current AI advancements, helping to improve our quality of life and ensure a sustainable health system. IoMT systems with cutting‐edge scientific capabilities are capable of detecting, transmitting, learning and reasoning.
Mujeeb Ur Rehman +8 more
wiley +1 more source