Results 1 to 10 of about 60 (50)

Fundamentals of metric theory of real numbers in their $\overline{Q_3}$-representation

open access: yesМатематичні Студії, 2021
In the paper we were studied encoding of fractional part of a real number with an infinite alphabet (set of digits) coinciding with the set of non-negative integers.
I.V. Zamrii, V.V. Shkapa, H.M. Vlasyk
doaj   +1 more source

Solution of Klein-Gordon Equation in F(R) Theory of Gravity

open access: yesJurnal Ilmiah Pendidikan Fisika Al-Biruni, 2023
The  theory, as a modification of the general relativity theory, is frequently employed as an alternative theory of gravity and offers a promising avenue for addressing the challenges of formulating a quantum gravity theory.
Arista Romadani
doaj   +1 more source

Triangular Fuzzy Metric [PDF]

open access: yesمجلة جامعة النجاح للأبحاث العلوم الطبيعية, 1994
This paper presents a new method to rank triangular fuzzy numbers as well as a new metric (triangular fuzzy metric) on the set of fuzzy points. This metric can be used in both studying fuzzy topological spaces and decision-making theory.
Mohammad A. Mahmoud Al-Amleh
doaj   +1 more source

Approximations of Fuzzy Numbers by Using r-s Piecewise Linear Fuzzy Numbers Based on Weighted Metric

open access: yesMathematics, 2022
Using simple fuzzy numbers to approximate general fuzzy numbers is an important research aspect of fuzzy number theory and application. The existing results in this field are basically based on the unweighted metric to establish the best approximation ...
Haojie Lv, Guixiang Wang
doaj   +1 more source

Pseudo-hermitian random matrix models: General formalism

open access: yesNuclear Physics B, 2022
Pseudo-hermitian matrices are matrices hermitian with respect to an indefinite metric. They can be thought of as the truncation of pseudo-hermitian operators, defined over some Krein space, together with the associated metric, to a finite dimensional ...
Joshua Feinberg, Roman Riser
doaj   +1 more source

On w-Isbell-convexity

open access: yesApplied General Topology, 2022
Chistyakov introduced and developed a concept of modular metric for an arbitrary set in order to generalise the classical notion of modular on a linear space.
Olivier Olela Otafudu, Katlego Sebogodi
doaj   +1 more source

Contribution of Jonas Kubilius to the metric theory of Diophantine approximation of dependent variables

open access: yesЖурнал Белорусского государственного университета: Математика, информатика, 2021
The article is devoted to the latest results in metric theory of Diophantine approximation. One of the first major result in area of number theory was a theorem by academician Jonas Kubilius. This paper is dedicated to centenary of his birth.
Victor V. Beresnevich   +4 more
doaj   +1 more source

Tidal Deformability of Neutron Stars in Unimodular Gravity

open access: yesUniverse, 2022
Unimodular gravity is a modified theory with respect to general relativity by an extra condition that the determinant of the metric is fixed. Especially, if the energy-momentum tensor is not imposed to be conserved separately, a new geometric structure ...
Rui-Xin Yang, Fei Xie, Dao-Jun Liu
doaj   +1 more source

Continued $\mathbf{A_2}$-fractions and singular functions

open access: yesМатематичні Студії, 2022
In the article we deepen the metric component of theory of infinite $A_2$-continued fractions $[0;a_1,a_2,...,a_n,...]$ with a two-element alphabet $A_2=\{\frac12,1\}$, $a_n\in A_2$ and establish the normal property of numbers of the segment $I=[\frac12 ...
M.V. Pratsiovytyi   +3 more
doaj   +1 more source

Multipolar boson stars: Macroscopic Bose-Einstein condensates akin to hydrogen orbitals

open access: yesPhysics Letters B, 2021
Boson stars are often described as macroscopic Bose-Einstein condensates. By accommodating large numbers of bosons in the same quantum state, they materialize macroscopically the intangible probability density cloud of a single particle in the quantum ...
C.A.R. Herdeiro   +4 more
doaj   +1 more source

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