Results 31 to 40 of about 112,931 (232)

The nonlocal problem for the differential-operator equation of the even order with the involution

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2018
In this paper, the problem with boundary nonself-adjoint conditions for a differential-operator equations of the order $2n$ with involution is studied. Spectral properties of operator of the problem is investigated.
Ya.O. Baranetskij   +3 more
doaj   +1 more source

Dynamical Transmission and Mathematical Analysis of Ebola Virus Using a Constant Proportional Operator with a Power Law Kernel

open access: yesFractal and Fractional, 2023
The Ebola virus continues to be the world’s biggest cause of mortality, especially in developing countries, despite the availability of safe and effective immunization.
Changjin Xu, Muhammad Farman
doaj   +1 more source

Eigenvalue Problem for a Reduced Dynamo Model in Thick Astrophysical Discs

open access: yesMathematics, 2023
Magnetic fields of different astrophysical objects are generated by the dynamo mechanism. Dynamo is based on the alpha-effect and differential rotation, which are described using a system of parabolic equations.
Evgeny Mikhailov, Maria Pashentseva
doaj   +1 more source

Matching the LBO Eigenspace of Non-Rigid Shapes via High Order Statistics

open access: yesAxioms, 2014
A fundamental tool in shape analysis is the virtual embedding of the Riemannian manifold describing the geometry of a shape into Euclidean space. Several methods have been proposed to embed isometric shapes into flat domains, while preserving the ...
Alon Shtern, Ron Kimmel
doaj   +1 more source

Vortex Solutions for Thermohaline circulation Equations [PDF]

open access: yesJournal of Mahani Mathematical Research, 2023
The main objective of this article is to establish a new model and find some vortex axisymmetric solutions of finite core size for this model. We introduce the hydrodynamical equations governing the atmospheric circulation over the tropics, the ...
Mahdi Kamandar
doaj   +1 more source

Half-delocalization of eigenfunctions for the Laplacian on an Anosov manifold [PDF]

open access: yes, 2007
We study the high-energy eigenfunctions of the Laplacian on a compact Riemannian manifold with Anosov geodesic flow. The localization of a semiclassical measure associated with a sequence of eigenfunctions is characterized by the Kolmogorov-Sinai entropy
Anantharaman, Nalini   +1 more
core   +3 more sources

Prony Method for Two-Generator Sparse Expansion Problem

open access: yesMathematical and Computational Applications, 2022
In data analysis and signal processing, the recovery of structured functions from the given sampling values is a fundamental problem. Many methods generalized from the Prony method have been developed to solve this problem; however, the current research ...
Abdulmtalb Hussen, Wenjie He
doaj   +1 more source

The Principle of Localization at the Class of Functions Integrable in the Riemann for the Processes of Lagrange - Sturm - Liouville [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2020
Let us say that the principle of localization holds at the class of functions $F$ at point $x_0 \in [0, \pi]$ for the Lagrange\,--\,Sturm\,--\,Liouville interpolation process $L_n^{SL}(f,x)$ if $\lim_{n \rightarrow \infty}\left|L_n^{SL}(f, x_0)-L_n^{SL ...
Aleksandr Yurievich Trynin   +1 more
doaj   +1 more source

Experimental Results of Partial Discharge Localization in Bounded Domains

open access: yesSensors, 2021
This work presents a novel diagnostic method to localize Partial Discharges (PDs) inside Medium Voltage (MV) and High Voltage (HV) equipment. The method is well suited for that equipment presenting a bounded domain with fixed Boundary Conditions (BCs ...
Luca Perfetto, Gabriele D’Antona
doaj   +1 more source

Uniform localization is always uniform [PDF]

open access: yes, 2015
In this note we show that if a family of ergodic Schr\"odinger operators on $l^2({\Bbb Z}^\gamma)$ with continuous potentials have uniformly localized eigenfunctions then these eigenfunctions must be uniformly localized in a homogeneous ...
Han, Rui
core   +3 more sources

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