Results 71 to 80 of about 58,118 (188)

Parameterizing Isopycnal Mixing via Kinetic Energy Backscatter in an Eddy‐Permitting Ocean Model

open access: yesJournal of Advances in Modeling Earth Systems, Volume 18, Issue 3, March 2026.
Abstract Representing mesoscale turbulence in eddy‐permitting ocean models raises challenges for climate simulations; in such models, eddies and their associated energy and transport effects are resolved either marginally or only over parts of the domain.
Matthew P. Pudig   +3 more
wiley   +1 more source

The uniform convergence of the eigenfunctions expansions of the biharmonic operator in closed domain [PDF]

open access: yes, 2017
The mathematical models of the various vibrating systems are partial differential equations and finding the solutions of such equations are obtained by developing the theory of eigenfunction expansions of differential operators.
Ahmedov, Anvarjon A.   +2 more
core   +1 more source

Eigenvalues for a class of singular problems involving p(x)-Biharmonic operator and q(x)-Hardy potential

open access: yesAdvances in Nonlinear Analysis, 2019
In this paper, we consider the nonlinear eigenvalue problem:
Khalil Abdelouahed El   +3 more
doaj   +1 more source

Eigenvalue of (p,q)-Biharmonic System along the Ricci Flow

open access: yesAxioms
In this paper, we determine the variation formula for the first eigenvalue of (p,q)-biharmonic system on a closed Riemannian manifold. Several monotonic quantities are also derived.
Lixu Yan   +5 more
doaj   +1 more source

Analyticity and criticality results for the eigenvalues of the biharmonic operator

open access: yes, 2016
We consider the eigenvalues of the biharmonic operator subject to several homogeneous boundary conditions (Dirichlet, Neumann, Navier, Steklov). We show that simple eigenvalues and elementary symmetric functions of multiple eigenvalues are real analytic,
Buoso, Davide, Davide Buoso
core   +1 more source

Scattering problems for perturbations of the multidimensional biharmonic operator [PDF]

open access: yes, 2018
Some scattering problems for the multidimensional biharmonic operator are studied. The operator is perturbed by first and zero order perturbations, which maybe complex-valued and singular. We show that the solutions to direct scattering problem satisfy a
Serov, Valery, Tyni, Teemu
core   +1 more source

Existence of solutions for an eigenvalue problem with weight

open access: yesElectronic Journal of Differential Equations, 2010
In this work we study the existence of solutions for the nonlinear eigenvalue problem with p-biharmonic $ Delta_p^2 u =lambda m(x)|u|^{p-2}u$ in a smooth bounded domain under Neumann boundary conditions.
Abdel Rachid El Amrouss   +2 more
doaj  

Existence and uniqueness of a positive solution for a non homogeneous problem of fourth order with weights

open access: yesElectronic Journal of Differential Equations, 2006
In this work we study the existence of a positive solutions to the non homogeneous equation $$ Delta( |Delta u|^{p-2} Delta u) = m |u|^{q-2}u $$ with Navier boundary conditions, where $1 less than ,q less than p_2^*$ and $min L^infty(Omega)setminus {0}$,
Mohamed Talbi, Najib Tsouli
doaj  

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