Results 21 to 30 of about 46,313 (294)

Adaptive model Predictive control for a magnetic suspension system under initial position dispersions and voltage disturbances [PDF]

open access: yesFME Transactions, 2022
A nonlinear magnetic suspension system consisting of a mechanical motion and electromagnetic circuit is considered in this paper. An online algorithm that is used to stabilize the suspended mass targeting the desired ball position, ball velocity and coil
Al-Bakri Fawaz F.   +2 more
doaj   +1 more source

Arithmetic for closed balls

open access: yesQuaestiones Mathematicae, 2021
Inspired by circular complex interval arithmetic, an arithmetic for closed balls in Rn is pursued. In this sense, the properties of certain operations on closed balls in Rn, some of which related either to the Hadamard product of vectors or to the 2-fold vector cross product when n є {3, 7}, are studied.
Beites, P. D.   +2 more
openaire   +5 more sources

Existence of Fuzzy Fixed Points and Common Fuzzy Fixed Points for FG-Contractions with Applications

open access: yesMathematics, 2023
This article contains results of the existence of fuzzy fixed points of fuzzy mappings that satisfy certain contraction conditions using the platform of partial b-metric spaces. Some non-trivial examples are provided to authenticate the main results. The
Dur-e-Shehwar Sagheer   +4 more
doaj   +1 more source

Solving System of Linear Equations Using Common Fixed Point Theorems in Bicomplex Valued Metric Spaces

open access: yesMathematics, 2023
The aim of the present research article is to solve the system of linear equations using common fixed point theorems in the context of bicomplex valued metric spaces.
Amnah Essa Shammaky, Jamshaid Ahmad
doaj   +1 more source

Existence of Common Fixed Points of Generalized ∆-Implicit Locally Contractive Mappings on Closed Ball in Multiplicative G-Metric Spaces with Applications

open access: yesMathematics, 2022
In this paper, we introduce a generalized Δ-implicit locally contractive condition and give some examples to support it and show its significance in fixed point theory.
Tahair Rasham   +3 more
doaj   +1 more source

Approximation in the Closed Unit Ball [PDF]

open access: yes, 2018
In this expository article, we present a number of classic theorems that serve to identify the closure in the sup-norm of various sets of Blaschke products, inner functions and their quotients, as well as the closure of the convex hulls of these sets. The results presented include theorems of Carathéodory, Fisher, Helson-Sarason, Frostman, Adamjan-Arov-
Mashreghi, Javad, Ransford, Thomas
openaire   +2 more sources

Multiplication of closed balls in $\mathbb{C}^n$

open access: yesTurkish Journal of Mathematics, 2023
Summary: Motivated by circular complex interval arithmetic, some operations on closed balls in \(\mathbb{C}^n\) are considered. Essentially, the properties of possible multiplications for closed balls in \(\mathbb{C}^n\), related either to the Hadamard product of vectors or to the 2-fold vector cross product when \(n\in\{3, 7\}\), are studied.
Beites, Patrícia Damas   +2 more
openaire   +2 more sources

The specific selection function effect on clinker grinding efficiency in a dry batch ball mill [PDF]

open access: yes, 2008
Dry grinding experiments on cement clinker were carried out using a laboratory batch ball mill equipped with a torque measurement. The influence of the ball size distribution on the specific selection function can be approached by laboratory runs using ...
Frances, Christine   +2 more
core   +1 more source

Fixed point results for fuzzy mappings in a b-metric space

open access: yesFixed Point Theory and Applications, 2018
In this paper, we establish some fixed point results for fuzzy mappings in a complete dislocated b-metric space. Our results generalize and extend the results of Joseph et al. (SpringerPlus 5:Article ID 217, 2016).
Abdullah Shoaib   +4 more
doaj   +1 more source

Edge Close Ball Packings [PDF]

open access: yesDiscrete & Computational Geometry, 2001
Consider a packing of unit balls with center \(\{o_i\}\). The Dirichlet-Voronoi cell associated with \(o_i\) consists of the points in space which are closer to \(o_i\) than any other center. An edge-line is the intersection of the planes of two intersecting faces of some Dirichlet-Voronoi cell, and the edge-closeness of a packing is the maximal ...
openaire   +1 more source

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