Results 31 to 40 of about 47,755,022 (293)

О регулярности слабых решений одного класса начально-краевых задач с псевдо-дифференциальными операторами

open access: yesVìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Modelûvannâ, 2017
В роботе исследуется проблема разрешимости и вопросы регулярности слабых решений одного класса начально-краевых задач, возникающих при изучении динамики кардио-артериальных систем.
P. I. Kogut, Yu. A. Maksimenkova
doaj   +1 more source

Existence Results for Noncoercive Variational Problems

open access: yesSIAM Journal on Control and Optimization, 1996
The aim of this paper is to give an existence result for a class of one-dimensional, non-convex, non-coercive problems in the Calculus of Variations. The main tools for the proof are an existence theorem in the convex case and the closure of the convex hull of the epigraph of functions strictly convex at infinity.
CRASTA, Graziano, MALUSA, ANNALISA
openaire   +4 more sources

A Note on Korn’s Inequality in an N-Dimensional Context and a Global Existence Result for a Non-Linear Plate Model

open access: yesAppliedMath, 2023
In the first part of this article, we present a new proof for Korn’s inequality in an n-dimensional context. The results are based on standard tools of real and functional analysis.
Fabio Silva Botelho
doaj   +1 more source

Existence Result and Uniqueness for Some Fractional Problem

open access: yesMathematics, 2019
In this article, by the use of the lower and upper solutions method, we prove the existence of a positive solution for a Riemann−Liouville fractional boundary value problem. Furthermore, the uniqueness of the positive solution is given.
Guotao Wang   +3 more
doaj   +1 more source

Uniqueness and Existence Results

open access: yes, 2022
AbstractIn this chapter, we establish Theorems 10.1007/978-3-030-95088-0_1#FPar4 and 10.1007/978-3-030-95088-0_1#FPar5 and show that, under the assumptions of these theorems, the sequence $$n\mapsto f^p_n[g]$$ n ↦ f
Jean-Luc Marichal, Naïm Zenaïdi
openaire   +1 more source

Existence results for superlinear semipositone BVP’s [PDF]

open access: yesProceedings of the American Mathematical Society, 1996
The authors consider the existence of a positive solution to the Sturm-Liouville boundary value problem \((p(t)\cdot u')'+\lambda\cdot f(t,u)=0 ...
Anuradha, V., Hai, D. D., Shivaji, R.
openaire   +2 more sources

A global existence result for the semigeostrophic equations in three dimensional convex domains [PDF]

open access: yes, 2012
Exploiting recent regularity estimates for the Monge-Amp\`ere equation, under some suitable assumptions on the initial data we prove global-in-time existence of Eulerian distributional solutions to the semigeostrophic equations in 3-dimensional convex ...
L. Ambrosio   +3 more
semanticscholar   +1 more source

Generalized Active Contour Model in an Anisotropic Variable Exponent Sobolev Space

open access: yesJournal of Optimization, Differential Equations and Their Applications
Mostly motivated by the practical applications especially in the field of satellite remote sensing of agricultural territories, we develop a novel approach to the domain decomposition basing on the anisotropic version of the Chan-Vese active contour ...
Natalya Ivanchuk   +2 more
doaj   +1 more source

Existence results for a class of generalized fractional boundary value problems

open access: yesAdvances in Difference Equations, 2017
In this paper, we study a class of generalized fractional order three-point boundary value problems that involve fractional derivative defined in terms of weight and scale functions.
Wen Cao, Y Xu, Zhoushun Zheng
doaj   +1 more source

On the qualitative evaluation of the variable-order coupled boundary value problems with a fractional delay

open access: yesJournal of Inequalities and Applications, 2023
The logical progression from the constant order differential equations is the field of variable-order differential equations. Such equations can frequently give a more succinct description of problems in the real world.
Hasanen A. Hammad   +2 more
doaj   +1 more source

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