Results 21 to 30 of about 4,035,775 (371)

Anisotropic parabolic equations with variable nonlinearity [PDF]

open access: yesPublicacions Matemàtiques, 2009
We study the Dirichlet problem for a class of nonlinear parabolic equations with nonstandard anisotropic growth conditions. Equations of this class generalize the evolutional p(x, t)-Laplacian. We prove theorems of existence and uniqueness of weak solutions in suitable Orlicz-Sobolev spaces, derive global and local in time L∞ bounds for the weak ...
Antontsev, S., Shmarev, S.
openaire   +7 more sources

Positive solutions for discrete anisotropic equations

open access: yes, 2020
Using variational method, we study the existence of positive solutions for an anisotropic discrete Dirichlet problem with some functions alpha, beta and a nonlinear term f.
A. Ayoujil   +2 more
semanticscholar   +1 more source

Decay estimates and a vanishing phenomenon for the solutions of critical anisotropic equations [PDF]

open access: yes, 2014
We investigate the asymptotic behavior of solutions of anisotropic equations of the form − ∑ i = 1 n ∂ x i ( | ∂ x i u | p i − 2 ∂ x i u ) = f ( x , u ) in R n , where p i > 1 for all i = 1 , … , n and f is a Caratheodory function with critical Sobolev ...
J. Vétois
semanticscholar   +1 more source

New Anisotropic Exact Solution in Multifield Cosmology

open access: yesUniverse, 2021
In the case of two-scalar field cosmology, and specifically for the Chiral model, we determine an exact solution for the field equations with an anisotropic background space.
Andronikos Paliathanasis
doaj   +1 more source

Coupled heat transfer between a viscous shock gasdynamic layer and a transversely streamlined anisotropic half-space [PDF]

open access: yesINCAS Bulletin, 2020
The purpose of the article is to analytically solve the conjugate problem of heat transfer in a viscous shock layer on a blunt object and thermal conductivity in an anisotropic half-space.
Olga V. TUSHAVINA
doaj   +1 more source

Anisotropic Singular Neumann Equations with Unbalanced Growth [PDF]

open access: yesPotential Analysis, 2021
AbstractWe consider a nonlinear parametric Neumann problem driven by the anisotropic (p, q)-Laplacian and a reaction which exhibits the combined effects of a singular term and of a parametric superlinear perturbation. We are looking for positive solutions.
Nikolaos S. Papageorgiou   +2 more
openaire   +4 more sources

Locally Anisotropic Kinetic Processes and Thermodynamics in Curved Spaces [PDF]

open access: yes, 2000
The kinetic theory is formulated with respect to anholonomic frames of reference on curved spacetimes. By using the concept of nonlinear connection we develop an approach to modelling locally anisotropic kinetic processes and, in corresponding limits ...
Abramowitz   +44 more
core   +2 more sources

Semilinear anisotropic evolution partial differential equations

open access: yesJournal of Mathematical Analysis and Applications, 2003
Consider the anisotropic Cauchy problem \(\partial_t u+P(D)u-G(\partial^\alpha u)=0\) for \(t>0\), \(u(x,0)=u_0(x)\), where \(P(D)=\sum_{| \alpha:\rho| \leq m} c_\alpha D_x^\alpha\) is a quasi-elliptic operator of (anisotropic) order \(m\) and \(G\) is a homogeneous polynomial with constant coefficients.
P. Marcolongo, OLIARO, Alessandro
openaire   +2 more sources

Anisotropic singular logistic equations [PDF]

open access: yesOpuscula Mathematica
We consider a parametric Dirichlet problem driven by the anisotropic \((p,q)\)-Laplacian and a reaction with a singular term and a superdiffusive logistic perturbation.
João Pablo Pinheiro Da Silva   +3 more
doaj   +1 more source

Elliptic regularity theory applied to time harmonic anisotropic Maxwell's equations with less than Lipschitz complex coefficients [PDF]

open access: yes, 2014
The focus of this paper is the study of the regularity properties of the time harmonic Maxwell's equations with anisotropic complex coefficients, in a bounded domain with $C^{1,1}$ boundary. We assume that at least one of the material parameters is $W^{1,
Alberti, Giovanni S., Capdeboscq, Yves
core   +3 more sources

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