Results 31 to 40 of about 32,005 (324)

Holographic symmetry algebras for gauge theory and gravity [PDF]

Journal of High Energy Physics, 2021
All 4D gauge and gravitational theories in asymptotically flat spacetimes contain an infinite number of non-trivial symmetries. They can be succinctly characterized by generalized 2D currents acting on the celestial sphere.
A. Guevara, E. Himwich, M. Pate, A. Strominger   +3 more
semanticscholar   +1 more source

Wavelet-based systematic risk estimation for GCC stock markets and impact of the embargo on the Qatar case

Quantitative Finance and Economics, 2023
Systematic risk is one of the well-known indices involved in the market situation study. One of the disadvantages of scientific studies of market indices is the lack of involving extreme changes such as embargos and other crises in the model. The present
Anouar Ben Mabrouk, Sabrine Arfaoui, Mohamed Essaied Hamrita   +2 more
doaj   +1 more source

The analytic theory of algebraic numbers [PDF]

Bulletin of the American Mathematical Society, 1975
After the presentation of a sketch of the analytic proofs of the Dirichlet's unit theorem, the finiteness of the class number and Minkowski's discriminant theorem, the author discusses his results [Invent. Math. 23, 135--152 (1974; Zbl 0278.12005)] concerning the Brauer-Siegel theorem.
openaire   +4 more sources

Quantum solutions of a nonlinear Schrödinger equation [PDF]

Iranian Journal of Numerical Analysis and Optimization
In the present paper, we precisely conduct a quantum calculus method for the numerical solutions of PDEs. A nonlinear Schrödinger equation is considered. Instead of the known classical discretization methods based on the finite difference scheme, Adomian
S. Arfaoui, Ben Mabrouk
doaj   +1 more source

Hall Current Effect of Magnetic-Optical-Elastic-Thermal-Diffusive Non-Local Semiconductor Model during Electrons-Holes Excitation Processes

Crystals, 2022
This paper investigates a theoretical model for the interaction between electrons and holes (E/H) in elastic non-local semiconductors. When the medium is activated by photo-energy because of high temperatures, an optical-elastic-thermal-diffusion (OETD ...
Riadh Chteoui, Khaled Lotfy, Alaa A. El-Bary, Mohamed M. Allan   +3 more
doaj   +1 more source

Moore–Gibson–Thompson Stability Model in a Two-Temperature Photonic Semiconductor Excited Medium Affected by Rotation and Initial Stress

Crystals, 2022
In this paper, the two-temperature theory is used to examine a novel model that generalizes the Moore–Gibson–Thompson (MGT) effect according to two-dimensional electronic/thermoelastic deformation.
Riadh Chteoui, Kh. Lotfy, M. A. Seddeek, A. El-Dali, W. S. Hassanin   +4 more
doaj   +1 more source

Primary decompositions of unital locally matrix algebras [PDF]

Bulletin of Mathematical Sciences, 2020
We construct a unital locally matrix algebra of uncountable dimension that (1) does not admit a primary decomposition, (2) has an infinite locally finite Steinitz number. It gives negative answers to questions from [V. M.
Oksana Bezushchak, Bogdana Oliynyk
doaj   +1 more source

Thermal-Diffusive Processes of an Electron-Hole Non-Local Semiconductor Model with Variable Thermal Conductivity and Hall Current Effect

Mathematics, 2023
In this work, a novel model is presented that describes thermal diffusion processes through non-local semiconductor materials. The material under study is subjected to the influence of a strong magnetic field, which creates a Hall current.
Abeer Alhashash, Merfat H. Raddadi, Alaa A. El-Bary, Riadh Chteoui, Abdelwaheb Mhemdi, Khaled Lotfy   +5 more
doaj   +1 more source

Application of modern algebra in cryptography

Theoretical and Natural Science, 2023
With the rapid development of the digital age, information security, from personal data to national security, is becoming increasingly crucial. Information security primarily refers to the computation and processing of diverse information in computer ...
Yuling Qian
semanticscholar   +1 more source

Photo-thermoelastic wave propagation with changing thermal conductivity on excited pulsed laser nanoscale microelongated semiconductor material

Frontiers in Physics, 2023
Indroduction: The novel model of a non-local elastic semiconductor material that is microelongated is created. The process of photothermal transfer is responsible for the stimulation of the material. Photo-thermoelastic theories are used when the thermal
Ashraf M. Farhan, Shreen El-Sapa, Alaa A. El-Bary, Alaa A. El-Bary, Riadh Chteoui, Riadh Chteoui, Khaled Lotfy, Khaled Lotfy   +7 more
doaj   +1 more source