Search results for " 35A02"

showing 4 items of 4 documents

Regular 1-harmonic flow

2017

We consider the 1-harmonic flow of maps from a bounded domain into a submanifold of a Euclidean space, i.e. the gradient flow of the total variation functional restricted to maps taking values in the manifold. We restrict ourselves to Lipschitz initial data. We prove uniqueness and, in the case of a convex domain, local existence of solutions to the flow equations. If the target manifold has non-positive sectional curvature or in the case that the datum is small, solutions are shown to exist globally and to become constant in finite time. We also consider the case where the domain is a compact Riemannian manifold without boundary, solving the homotopy problem for 1-harmonic maps under some …

Applied Mathematics010102 general mathematicsMathematical analysisBoundary (topology)Total variation flow; harmonic flow; well-posednessRiemannian manifoldLipschitz continuitySubmanifold01 natural sciencesManifoldDomain (mathematical analysis)35K51 35A01 35A02 35B40 35D35 35K92 35R01 53C21 68U10010101 applied mathematicsMathematics - Analysis of PDEsFlow (mathematics)FOS: MathematicsMathematics::Differential GeometrySectional curvature0101 mathematicsAnalysisAnalysis of PDEs (math.AP)MathematicsCalculus of Variations and Partial Differential Equations
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Local uniqueness of the solutions for a singularly perturbed nonlinear nonautonomous transmission problem

2020

Abstract We consider the Laplace equation in a domain of R n , n ≥ 3 , with a small inclusion of size ϵ . On the boundary of the inclusion we define a nonlinear nonautonomous transmission condition. For ϵ small enough one can prove that the problem has solutions. In this paper, we study the local uniqueness of such solutions.

Local uniqueness of the solutionsLaplace's equation020502 materialsApplied MathematicsNonlinear nonautonomous transmission problem010102 general mathematicsMathematical analysisA domainBoundary (topology)02 engineering and technology01 natural sciencesNonlinear systemMathematics - Analysis of PDEs35J25 31B10 35J65 35B25 35A020205 materials engineeringTransmission (telecommunications)Settore MAT/05 - Analisi MatematicaLocal uniqueness of the solutions; Nonlinear nonautonomous transmission problem; Singularly perturbed perforated domainFOS: MathematicsUniqueness0101 mathematicsSingularly perturbed perforated domainAnalysisMathematicsAnalysis of PDEs (math.AP)
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Landis-type conjecture for the half-Laplacian

2023

In this paper, we study the Landis-type conjecture, i.e., unique continuation property from infinity, of the fractional Schrödinger equation with drift and potential terms. We show that if any solution of the equation decays at a certain exponential rate, then it must be trivial. The main ingredients of our proof are the Caffarelli-Silvestre extension and Armitage’s Liouville-type theorem. peerReviewed

Landis conjecture half-Laplacian Caarelli- Silvestre extension Liouville-type theoremosittaisdifferentiaaliyhtälötMathematics - Analysis of PDEsApplied MathematicsGeneral Mathematicsunique continuation propertyPrimary: 35A02 35B40 35R11. Secondary: 35J05 35J15FOS: MathematicsAnalysis of PDEs (math.AP)
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Calder\'on's problem for p-Laplace type equations

2016

We investigate a generalization of Calder\'on's problem of recovering the conductivity coefficient in a conductivity equation from boundary measurements. As a model equation we consider the p-conductivity equation with p strictly between one and infinity, which reduces to the standard conductivity equation when p equals two, and to the p-Laplace equation when the conductivity is constant. The thesis consists of results on the direct problem, boundary determination and detecting inclusions. We formulate the equation as a variational problem also when the conductivity may be zero or infinity in large sets. As a boundary determination result we recover the first order derivative of a smooth co…

Mathematics - Analysis of PDEs35R30 (Primary) 35J92 35R05 35D30 35Q60 35Q79 35J20 35J25 35H99 35A15 35A01 35A02 80A23 (Secondary)
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