Results 51 to 60 of about 550,186 (331)

Notes on Higher-Spin Diffeomorphisms

Universe, 2021
Higher-spin diffeomorphisms are to higher-order differential operators what diffeomorphisms are to vector fields. Their rigorous definition is a challenging mathematical problem which might predate a better understanding of higher-spin symmetries and ...
Xavier Bekaert
doaj   +1 more source

A Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller

International Journal of Adaptive Control and Signal Processing, EarlyView.
Block Diagram of the Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller. ABSTRACT This article introduces a discrete‐time robust adaptive one‐sample‐ahead preview super‐twisting sliding mode controller. A stability analysis of the controller by Lyapunov criteria is developed to demonstrate its robustness in handling both ...
Guilherme Vieira Hollweg, Paulo Jefferson Dias de Oliveira Evald, Shivam Chaturvedi, Hilton Abilio Gründling, Rodrigo Varella Tambara, Wencong Su   +5 more
wiley   +1 more source

Quantale Modules and their Operators, with Applications

, 2009
The central topic of this work is the categories of modules over unital quantales. The main categorical properties are established and a special class of operators, called Q-module transforms, is defined.
Russo, Ciro
core   +1 more source

Unified Framework for Continuous and Discrete Relations of Gehring and Muckenhoupt Weights on Time Scales

Axioms
This article contains some relations, which include some embedding and transition properties, between the Muckenhoupt classes Mγ;γ>1 and the Gehring classes Gδ;δ>1 of bi-Sobolev weights on a time scale T.
Samir H. Saker, Naglaa Mohammed, Haytham M. Rezk, Ahmed I. Saied, Khaled Aldwoah, Ayman Alahmade   +5 more
doaj   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source

Generalized algebra within a nonextensive statistics

, 2003
By considering generalized logarithm and exponential functions used in nonextensive statistics, the four usual algebraic operators : addition, subtraction, product and division, are generalized.
A. Le Méhauté, Abe, Abe, Abe, Aguiar, Antoni, Barré, Barré, Beardon, Borges, Borges, Cannas, Cardy, Curado, Dauxois, dos Santos, Frolov, Grigera, Hayward, Hayward, Jancovici, Jund, Kaniadakis, Kaniadakis, L. Nivanen, Latora, Latora, Latora, Le Méhauté, Le Méhauté, Pennini, Q.A. Wang, Salinas, Tsallis, Tsallis, Tsallis, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Yamano   +45 more
core   +2 more sources

A new mathematical operator

International Journal of Complementary and Alternative Medicine, 2022
In mathematics the basic operations are addition, subtraction, multiplication and division, and a mathematical operator is a symbol that is used to indicate what operation is to be realized, for example, +, −, ×, ¸, and so on. In this article, I present the procedure by which it is possible to reduce any natural number -even or odd, with or without ...
openaire   +1 more source

Tempered Riemann–Liouville Fractional Operators: Stability Analysis and Their Role in Kinetic Equations

Fractal and Fractional
Mathematics and physics are deeply interconnected. In fact, physics relies on mathematical tools like calculus and differential equations. The aim of this article is to introduce tempered Riemann–Liouville (RL) fractional operators and their properties ...
Muhammad Umer, Muhammad Samraiz, Muath Awadalla, Meraa Arab   +3 more
doaj   +1 more source

Mirror symmetry and line operators

Journal of High Energy Physics, 2020
We study half-BPS line operators in 3d N $$ \mathcal{N} $$ = 4 gauge theories, focusing in particular on the algebras of local operators at their junctions.
Tudor Dimofte, Niklas Garner, Michael Geracie, Justin Hilburn   +3 more
doaj   +1 more source

Artificial neural network modelling of the neural population code underlying mathematical operations

NeuroImage, 2023
Mathematical operations have long been regarded as a sparse, symbolic process in neuroimaging studies. In contrast, advances in artificial neural networks (ANN) have enabled extracting distributed representations of mathematical operations.
Tomoya Nakai, Shinji Nishimoto
doaj   +1 more source