Results 11 to 20 of about 741,871 (299)

On the α−ψ−Contractive Mappings in C∗-Algebra Valued b-Rectangular Metric Spaces and Fixed Point Theorems

open access: yesEuropean Journal of Mathematical Analysis, 2022
This present paper extends a version of α−ψ−contraction in C∗-algebra valued rectangular b-metric spaces and establishing the existence and uniqueness of fixed point for them.
Mohamed Rossafi   +2 more
doaj   +1 more source

Isolation Number versus Domination Number of Trees

open access: yesMathematics, 2021
If G=(VG,EG) is a graph of order n, we call S⊆VG an isolating set if the graph induced by VG−NG[S] contains no edges. The minimum cardinality of an isolating set of G is called the isolation number of G, and it is denoted by ι(G).
Magdalena Lemańska   +3 more
doaj   +1 more source

Differential Geometry and Its Application

open access: yesAxioms, 2023
We have launched a Special Issue of Axioms which focuses on the generalization of Riemannian spaces and their mappings [...]
Mića S. Stanković
doaj   +1 more source

Input-output Feedback Linearization Control for SM-PMSM [PDF]

open access: yesE3S Web of Conferences, 2023
This paper introduces a velocity control strategy for Surface-Mounted Permanent Magnet Synchronous Motors SM-PMSM using exact linearization and input-output decoupling techniques, which are rooted in the principles of differential geometry.
Abdelhamid Senhaji   +4 more
doaj   +1 more source

Explicit Information Geometric Calculations of the Canonical Divergence of a Curve

open access: yesMathematics, 2022
Information geometry concerns the study of a dual structure (g,∇,∇*) upon a smooth manifold M. Such a geometry is totally encoded within a potential function usually referred to as a divergence or contrast function of (g,∇,∇*).
Domenico Felice, Carlo Cafaro
doaj   +1 more source

Axiomatic Differential Geometry II-2: Differential Forms [PDF]

open access: yes, 2013
We refurbish our axiomatics of differential geometry introduced in [Mathematics for Applications,, 1 (2012), 171-182]. Then the notion of Euclideaness can naturally be formulated.
Nishimura, Hirokazu
core   +2 more sources

Axiomatic differential geometry I-1 - towards model cathegories of differential geometry [PDF]

open access: yes, 2012
In this paper we give an axiomatization of di erential geometry comparable to model categories for homotopy theory.
Nishimura, Hirokazu
core   +1 more source

Metrics on End-Periodic Manifolds as Models for Dark Matter

open access: yesUniverse, 2022
In this paper we will detail an approach to generate metrics and matter models on end-periodic manifolds, which are used extensively in the study of the exotic smooth structures of R4.
Christopher L. Duston
doaj   +1 more source

Multilocal invariants for the classical groups

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2003
Multilocal higher-order invariants, which are higher-order invariants defined at distinct points of representation space, for the classical groups are derived in a systematic way.
Paul F. Dhooghe
doaj   +1 more source

The Theoretical Study of Kink Deformation in Graphite Based on Differential Geometric Method

open access: yesNanomaterials, 2022
Kink deformation is often observed in materials with laminated layers. Graphite composed of stacked graphene layers has the unique laminated structure of carbon nanomaterials.
Xiao-Wen Lei   +2 more
doaj   +1 more source

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