Results 31 to 40 of about 123,443 (260)

Boolean Algebra of Soft Q-Sets in Soft Topological Spaces

open access: yesApplied Computational Intelligence and Soft Computing, 2022
We define soft Q-sets as soft sets whose soft closure and soft interior are commutative. We show that the soft complement, soft closure, and soft interior of a soft Q-set are all soft Q-sets. We show that a soft subset K of a given soft topological space
Samer Al Ghour
doaj   +1 more source

Lattices of quasi-equational theories as congruence lattices of semilattices with operators, Part I [PDF]

open access: yes, 2012
We show that for every quasivariety K of structures (where both functions and relations are allowed) there is a semilattice S with operators such that the lattice of quasi-equational theories of K (the dual of the lattice of sub-quasivarieties of K) is ...
Adaricheva K. V.   +6 more
core   +12 more sources

Cartan subalgebras in C*-algebras of Hausdorff etale groupoids

open access: yes, 2016
The reduced $C^*$-algebra of the interior of the isotropy in any Hausdorff \'etale groupoid $G$ embeds as a $C^*$-subalgebra $M$ of the reduced $C^*$-algebra of $G$.
A. Huef   +25 more
core   +1 more source

Uma leitura de Produções de Significados na constituição da noção de base em Álgebra Linear

open access: yesRevista de Investigação e Divulgação em Educação Matemática, 2022
Neste artigo será apresentada uma leitura de processos de produção de significados a partir de registros de trabalhos de sujeitos históricos, reconhecidos como participantes da emergência de noções constitutivas do que atualmente é compreendido como base
Amarildo Melchiades da Silva   +2 more
doaj  

News vs Information

open access: yes, 2019
We consider the relative entropy between the vacuum state and a coherent state in linearized quantum gravity around a stationary black hole spacetime. Combining recent results by Casini et al.
Hollands, S., Ishibashi, A.
core   +1 more source

Symmetries and conformal bridge in Schwarschild-(A)dS black hole mechanics

open access: yesJournal of High Energy Physics, 2021
We show that the Schwarzschild-(A)dS black hole mechanics possesses a hidden symmetry under the three-dimensional Poincaré group. This symmetry shows up after having gauge-fixed the diffeomorphism invariance in the symmetry-reduced homogeneous Einstein-Λ
Jibril Ben Achour, Etera R. Livine
doaj   +1 more source

$T\bar T$ and the mirage of a bulk cutoff

open access: yesSciPost Physics, 2021
We use the variational principle approach to derive the large $N$ holographic dictionary for two-dimensional $T\bar T$-deformed CFTs, for both signs of the deformation parameter.
Monica Guica, Ruben Monten
doaj   +1 more source

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

Interior estimates of first order for initial value problems in the octonion algebra

open access: yesBulletin of Computational Applied Mathematics, 2021
In this paper we use a Cauchy-Type integral formula for analytic octonionic-valued functions, to give an interior estimate of first order, in the supremum norm, for such functions.
Yandry Intriago   +2 more
doaj  

Effective GUP-modified Raychaudhuri equation and black hole singularity: four models

open access: yesJournal of High Energy Physics, 2021
The classical Raychaudhuri equation predicts the formation of conjugate points for a congruence of geodesics, in a finite proper time. This in conjunction with the Hawking-Penrose singularity theorems predicts the incompleteness of geodesics and thereby ...
Keagan Blanchette   +2 more
doaj   +1 more source

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