Results 21 to 30 of about 545,914 (263)

Quantum Mechanics on Periodic and Non-Periodic Lattices and Almost Unitary Schwinger Operators

open access: yes, 2017
In this work we uncover the mathematical structure of the Schwinger algebra and introduce an almost unitary Schwinger operators which are derived by considering translation operators on a finite lattice.
Arik, Metin, Ildes, Medine
core   +1 more source

Existence of Positive Solutions for Non-Local Magnetic Fractional Systems

open access: yesFractal and Fractional
In this paper, the existence of a weak positive solution for non-local magnetic fractional systems is studied in the fractional magnetic Sobolev space through a sub-supersolution method combined with iterative techniques.
Tahar Bouali   +3 more
doaj   +1 more source

The Aharonov-Bohm effect for massless Dirac fermions and the spectral flow of Dirac type operators with classical boundary conditions [PDF]

open access: yes, 2012
We compute, in topological terms, the spectral flow of an arbitrary family of self-adjoint Dirac type operators with classical (local) boundary conditions on a compact Riemannian manifold with boundary under the assumption that the initial and terminal ...
A. R. Akhmerov   +31 more
core   +3 more sources

Approximation Results: Szász–Kantorovich Operators Enhanced by Frobenius–Euler–Type Polynomials

open access: yesAxioms
This research focuses on the approximation properties of Kantorovich-type operators using Frobenius–Euler–Simsek polynomials. The test functions and central moments are calculated as part of this study.
Nadeem Rao, Mohammad Farid, Mohd Raiz
doaj   +1 more source

Real-time Adaptive Optics with pyramid wavefront sensors: A theoretical analysis of the pyramid sensor model

open access: yes, 2018
We consider the mathematical background of the wavefront sensor type that is widely used in Adaptive Optics systems for astronomy, microscopy, and ophthalmology.
Hutterer, Victoria   +2 more
core   +1 more source

Generalized (τ, σ)-L-Derivations in Rings

open access: yesMathematics
Let τ and σ:X⟶X be automorphisms of an arbitrary associative ring X, and let L be a prime ideal of X. The main objective of this article is to combine the notions of generalized L-derivations and (τ,σ)-L-derivations by introducing and analyzing a novel ...
Hicham Saber   +5 more
doaj   +1 more source

A Rigorous Analysis of Integro-Differential Operators with Non-Singular Kernels

open access: yesFractal and Fractional, 2023
Integro-differential operators with non-singular kernels have been much discussed among fractional calculus researchers. We present a mathematical study to clearly establish the rigorous foundations of this topic.
Arran Fernandez, Mohammed Al-Refai
doaj   +1 more source

Weak commutation relations of unbounded operators and applications

open access: yes, 2011
Four possible definitions of the commutation relation $[S,T]=\Id$ of two closable unbounded operators $S,T$ are compared. The {\em weak} sense of this commutator is given in terms of the inner product of the Hilbert space $\H$ where the operators act ...
Atsushi Inoue   +6 more
core   +1 more source

Novel series representation of degenerate gamma function with formulation of new generalized kinetic equation

open access: yesMathematical and Computer Modelling of Dynamical Systems
The degenerate gamma function is a recently developed special function associated with the classical beta function. This study employs the complex delta function to investigate a novel series representation of the degenerate gamma function.
Asifa Tassaddiq   +3 more
doaj   +1 more source

LDAcoop: Integrating non‐linear population dynamics into the analysis of clonogenic growth in vitro

open access: yesMolecular Oncology, EarlyView.
Limiting dilution assays (LDAs) quantify clonogenic growth by seeding serial dilutions of cells and scoring wells for colony formation. The fraction of negative wells is plotted against cells seeded and analyzed using the non‐linear modeling of LDAcoop.
Nikko Brix   +13 more
wiley   +1 more source

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