Results 81 to 90 of about 4,328,107 (173)

Harmonic vibration of cusped plates in the N-th approximation of Vekua’s hierarchical models

open access: yesArchives of Mechanics, 2013
In this paper elastic cusped symmetric prismatic shells (i.e., plates of variable thickness with cusped edges) in the N-th approximation of Vekua’s hierarchical models are considered.
N. Chinchaladze
doaj   +1 more source

Rodingite‐Derived Melt as a Recipe for Ultra‐Calcic Magmas

open access: yesGeophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Rodingite is a high‐CaO rock formed by Ca‐rich fluid metasomatism on mafic protoliths. It typically occurs within serpentinite and represents an often‐overlooked constituent of the altered oceanic lithosphere that may be subducted into the mantle.
Mingdi Gao   +5 more
wiley   +1 more source

The Existence and Uniqueness of a New Boundary Value Problem (Type of Problem “E”) for Linear System Equations of the Mixed Hyperbolic-Elliptic Type in the Multivariate Dimension with the Changing Time Direction

open access: yesAbstract and Applied Analysis, 2015
The existence and uniqueness of the boundary value problem for linear systems equations of the mixed hyperbolic-elliptic type in the multivariate domain with the changing time direction are studied.
Mahammad A. Nurmammadov
doaj   +1 more source

On Compressible Fluid Flows of Forchheimer‐Type in Rotating Heterogeneous Porous Media

open access: yesMathematical Methods in the Applied Sciences, Volume 49, Issue 13, Page 15010-15055, 15 September 2026.
ABSTRACT We study the dynamics of compressible fluids in rotating heterogeneous porous media. The fluid flow is of Forchheimer‐type and is subject to a mixed mass and volumetric flux boundary condition. The governing equations are reduced to a nonlinear partial differential equation for the pseudo‐pressure.
Emine Celik, Luan Hoang, Thinh Kieu
wiley   +1 more source

Gain of regularity for a Korteweg - de Vries - Kawahara type equation

open access: yesElectronic Journal of Differential Equations, 2004
We study the existence of local and global solutions, and the gain of regularity for the initial value problem associated to the Korteweg - de Vries - Kawahara (KdVK) equation perturbed by a dispersive term which appears in several fluids dynamics ...
Octavio Paulo Vera Villagran
doaj  

To a nonlocal generalization of the Dirichlet problem

open access: yesJournal of Inequalities and Applications, 2006
A mixed problem with a boundary Dirichlet condition and nonlocal integral condition is considered for a two-dimensional elliptic equation.The existence and uniqueness of a weak solution of this problem are proved in a weighted Sobolev space.
Berikelashvili Givi
doaj  

Existence results for Navier problems with degenerated (p,q)-Laplacian and (p,q)-Biharmonic operators [PDF]

open access: yesResults in Nonlinear Analysis, 2018
In this article, we prove the existence and uniqueness of solutions for the Navier problem \[ (P)\left\{ \begin{array}{llll} & {\Delta}{\big[}{\omega}(x)(\,{\vert{\Delta}u\vert}^{p-2}{\Delta}u + {\vert{\Delta}u\vert}^{q-2}{\Delta}u ...
Albo Carlos Cavalheiro
doaj  

Integration Processes of Delay Differential Equation Based on Modified Laguerre Functions

open access: yesJournal of Applied Mathematics, 2012
We propose long-time convergent numerical integration processes for delay differential equations. We first construct an integration process based on modified Laguerre functions.
Yeguo Sun
doaj   +1 more source

Hardy-Sobolev inequalities and weighted capacities in metric spaces

open access: yes, 2022
Let $\Omega$ be an open set in a metric measure space $X$. Our main result gives an equivalence between the validity of a weighted Hardy–Sobolev inequality in $\Omega$ and quasiadditivity of a weighted capacity with respect to Whitney covers of $\Omega$.
Lehrbäck, Juha   +2 more
core  

Maximal estimates for fractional Schr\"odinger equations with spatial variable coefficient

open access: yesElectronic Journal of Differential Equations, 2018
Let $v(r,t)=\mathcal{T}_tv_0(r)$ be the solution to a fractional Schrodinger equation where the coefficient of Laplacian depends on the spatial variable. We prove some weighted $L^q$ estimates for the maximal operator generated by $\mathcal{T}_t$ with
Bo-Wen Zheng
doaj  

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