Results 11 to 20 of about 3,297,362 (328)

∗-K-Operator Frame for Hom∗A(X)

open access: yesEuropean Journal of Mathematical Analysis, 2021
In this work, we introduce the concept of ∗-K-operator frames in Hilbert pro-C∗-modules, which is a generalization of K-operator frame. We present the analysis operator, the synthesis operator and the frame operator.
Mohamed Rossafi   +2 more
doaj   +1 more source

Online Handwriting Recognition Method with a Non-Inertial Reference Frame Based on the Measurement of Linear Accelerations and Differential Geometry: An Alternative to Quaternions. [PDF]

open access: yesMicromachines (Basel)
This work describes a mathematical model for handwriting devices without a specific reference surface (SRS). The research was carried out on two hypotheses: the first considers possible circular segments that could be made during execution for the ...
Abarca Jiménez GS   +5 more
europepmc   +2 more sources

Nutrigonometry III: curvature, area and differences between performance landscapes

open access: yesRoyal Society Open Science, 2022
Nutrition is one of the underlying factors necessary for the expression of life-histories and fitness across the tree of life. In recent decades, the geometric framework (GF) has become a powerful framework to obtain biological insights through the ...
Juliano Morimoto   +2 more
doaj   +1 more source

Controlled K-Fusion Frame for Hilbert Spaces

open access: yesMoroccan Journal of Pure and Applied Analysis, 2021
K-fusion frames are a generalization of fusion frames in frame theory. In this paper, we extend the concept of controlled fusion frames to controlled K-fusion frames, and we develop some results on the controlled K-fusion frames for Hilbert spaces, which
Assila Nadia   +2 more
doaj   +1 more source

On fixed point theorems in C-algebra valued b-asymmetric metric spaces

open access: yesAIMS Mathematics, 2022
In this paper, we introduce the notion of $ C^* $-algebra-valued $ b $-asymmetric metric spaces and show several fixed point theorems that improve on a range of recent works in the literature.
Ouafaa Bouftouh   +3 more
doaj   +1 more source

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

Revisiting Volterra defects: geometrical relation between edge dislocations and wedge disclinations. [PDF]

open access: yesR Soc Open Sci
This study presents a comprehensive mathematical model for Volterra defects and explores their relations using differential geometry on Riemann–Cartan manifolds.
Kobayashi S, Takemasa K, Tarumi R.
europepmc   +2 more sources

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

A new approach to the geometric modeling of Iranian domes [PDF]

open access: yesتصمیم گیری و تحقیق در عملیات, 2023
Purpose: In Islamic architecture, using arches to build dome-shaped buildings has been very common. So, the research on building the domes of shrines and mosques is undoubtedly directed at studying the arches of those buildings.
Akbar Dehghan Nezhad, Nasim Daryani
doaj   +1 more source

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