Results 21 to 30 of about 4,720,579 (297)

On approximation in the Bers spaces [PDF]

open access: yesProceedings of the American Mathematical Society, 1973
Let D D be a Jordan domain in the complex plane with rectifiable boundary
openaire   +1 more source

Generalization of Pawlak’s Approximations in Hypermodules by Set-Valued Homomorphisms

open access: yesFoundations of Computing and Decision Sciences, 2017
The initiation and majority on rough sets for algebraic hyperstructures such as hypermodules over a hyperring have been concentrated on a congruence relation.
Mirvakili Saeed   +2 more
doaj   +1 more source

The Chebyshev Set Problem in Riesz Space

open access: yesJournal of Function Spaces, 2022
In this paper, we mainly study the best approximation theory in Riesz space, which is not constructed by the norm, but only rely on the order structure.
Shengwei Wu   +4 more
doaj   +1 more source

Soft covering based rough graphs and corresponding decision making

open access: yesOpen Mathematics, 2019
Soft set theory and rough set theory are two new tools to discuss uncertainty. Graph theory is a nice way to depict certain information. Particularly soft graphs serve the purpose beautifully.
Park Choonkil   +5 more
doaj   +1 more source

Topological Structures of IVF Approximation Spaces

open access: yesFuzzy Information and Engineering, 2016
An approximation space is a key concept in rough set theory, which plays an important role to approximate reasoning about data. An interval-valued fuzzy (IVF, for short) approximation space is an approximation space in the IVF environment. In this paper,
Gang-Qiang Zhang
doaj   +1 more source

Approximation of Rough Soft Set and Its Application to Lattice

open access: yesFuzzy Information and Engineering, 2015
The approximation of soft set is presented in modified soft rough (MSR) approximation space in this paper, i.e., approximation of an information system with respect to another information one.
Sankar Kumar Roy, Susanta Bera
doaj   +1 more source

A New Single-Valued Neutrosophic Rough Sets and Related Topology

open access: yesJournal of Mathematics, 2021
(Fuzzy) rough sets are closely related to (fuzzy) topologies. Neutrosophic rough sets and neutrosophic topologies are extensions of (fuzzy) rough sets and (fuzzy) topologies, respectively. In this paper, a new type of neutrosophic rough sets is presented,
Qiu Jin   +3 more
doaj   +1 more source

Schwarz iterative methods: Infinite space splittings

open access: yes, 2022
S.121-139We prove the convergence of greedy and randomized versions of Schwarz iterative methods for solving linear elliptic variational problems based on infinite space splittings of a Hilbert space.
Oswald, P., Griebel, M.
core   +1 more source

Deterministic Bi-Criteria Model for Solving Stochastic Mixed Vector Variational Inequality Problems

open access: yesMathematics, 2023
In this paper, we consider stochastic mixed vector variational inequality problems. Firstly, we present an equivalent form for the stochastic mixed vector variational inequality problems.
Meiju Luo, Menghan Du, Yue Zhang
doaj   +1 more source

On Proximity Spaces Constructed on Rough Sets

open access: yesAxioms
Based on equivalence relation R on X, equivalence class [x] of a point and equivalence class [A] of a subset represent the neighborhoods of x and A, respectively.
Jong Il Baek   +3 more
doaj   +1 more source

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