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A Carleman estimate and the unique continuation property of solutions for a multi-terms time fractional diffusion equation up to order $\alpha\,\,(0<\alpha<2)$ and general time dependent second order strongly elliptic time elliptic operator…

Analysis of PDEs · Mathematics 2017-10-09 Ching-Lung Lin , Gen Nakamura

The aim of the paper is twofold. Firstly, we would like to derive quantitative uniqueness estimates for solutions of the general complex conductivity equation. It is still unknown whether the \emph{strong} unique continuation property holds…

Analysis of PDEs · Mathematics 2018-10-02 Catalin Carstea , Tu Nguyen , Jenn-Nan Wang

We consider the problem of the strong unique continuation for an elasticity system with general residual stress. Due to the known counterexamples, we assume the coefficients of the elasticity system are in the Gevrey class of appropriate…

Analysis of PDEs · Mathematics 2015-04-27 Yi Hsuan Lin

We study the uniqueness of horospheres and equidistant spheres in hyperbolic space under different conditions. First we generalize the Bernstein theorem by Do Carmo and Lawson to the embedded hypersurfaces with constant higher order mean…

Differential Geometry · Mathematics 2024-12-24 Barbara Nelli , Jingyong Zhu

The present paper aims at representing an improvement of the result in [2], where a strong unique continuation property and a description of the local behaviour around the edge of a crack for solutions to an elliptic problem are…

Analysis of PDEs · Mathematics 2024-07-29 Alessandra De Luca

We state that any constant curvature Riemannian metric with conical singularities of constant sign curvature on a compact (orientable) surface $S$ can be realized as a convex polyhedron in a Riemannian or Lorentzian) space-form. Moreover…

Differential Geometry · Mathematics 2010-11-16 François Fillastre

We show global uniqueness in the fractional Calder\'on problem with a single measurement and with data on arbitrary, possibly disjoint subsets of the exterior. The previous work \cite{GhoshSaloUhlmann} considered the case of infinitely many…

Analysis of PDEs · Mathematics 2020-02-12 Tuhin Ghosh , Angkana Rüland , Mikko Salo , Gunther Uhlmann

For a congruence of straight lines defined by a hypersurface in $R^{n+1}, n \geq 1,$ and a field of reflected directions created by a point source we define the notion of intensity in a tangent direction and introduce elementary symmetric…

Analysis of PDEs · Mathematics 2009-09-16 Vladimir Oliker

We revisit Allendoerfer-Weil's formula for the Euler characteristic of embedded hypersurfaces in constant sectional curvature manifolds, first taking some time to re-prove it while demonstrating techniques of [2] and then applying it to…

Differential Geometry · Mathematics 2021-09-08 R. Albuquerque

We study multi-parameters deformations of isolated singularity function-germs on either a subanalytic set or a complex analytic spaces. We prove that if such a deformation has no coalescing of singular points, then it has constant…

Complex Variables · Mathematics 2022-06-22 Aurélio Menegon , Miriam da Silva Pereira

We establish uniqueness and regularity results for tangent cones (at a point or at infinity) with isolated singularities arising from a given immersed stable minimal hypersurface with suitably small (non-immersed) singular set. In…

Differential Geometry · Mathematics 2024-01-30 Nick Edelen , Paul Minter

These notes are intended as an introduction to the question of unique continuation for the wave operator, and some of its applications. The general question is whether a solution to a wave equation in a domain, vanishing on a subdomain has…

Analysis of PDEs · Mathematics 2023-07-06 Camille Laurent , Matthieu Léautaud

We show that strictly stable components of Allen-Cahn minimal hypersurfaces always occur with multiplicity one. We also establish the uniqueness of solutions converging to nondegenerate hypersurfaces with multiplicity one. Our results work…

Differential Geometry · Mathematics 2022-03-10 Marco A. M. Guaraco , Fernando C. Marques , Andre Néves

We classify the $O(p)\times O(q)$-invariant constant mean curvature hypersurfaces with singularity at the origin, solving a conjecture of Wu-yi Hsiang.

Differential Geometry · Mathematics 2024-02-16 Hilário Alencar , Ronaldo Garcia , Gregório Silva Neto

In this paper, we establish a globally quantitative estimate of unique continuation at one time point for solutions of parabolic equations with Neumann boundary conditions in bounded domains. Our proof is mainly based on Carleman commutator…

Analysis of PDEs · Mathematics 2022-02-22 Yueliang Duan , Lijuan Wang , Can Zhang

In this paper, we prove some fundamental theorems for holomorphic curves on angular domain intersecting a hypersurface, finite set of fixed hyperplanes in general position and finite set of fixed hypersurfaces in general position on complex…

Complex Variables · Mathematics 2017-02-13 Nguyen Van Thin

This manuscript complements the Hirsch-Pugh-Shub (HPS) theory on persistence of normally hyperbolic laminations and the theorem of Robinson on the structural stability of diffeomorphisms that satisfy Axiom A and the strong transversality…

Dynamical Systems · Mathematics 2007-10-30 Pierre Berger

In this paper, we give the geometric meaning of hypersurfaces with constant mean curvature in a Finsler manifold by using volume preserving variation. Then we give the correspondence between principal curvatures of submanifolds by a…

Differential Geometry · Mathematics 2024-03-14 Yali Chen , Qun He , Yantong Qian

Given any nondegenerate k-dimensional minimal submanifold K of codimension greater than 1, we prove the existence of families of constant mean curvature submanifolds, with mean curvature varying from one member of the family to another,…

Differential Geometry · Mathematics 2007-05-23 Fethi Mahmoudi , Rafe Mazzeo , Frank Pacard

This article deals with the weak and strong unique continuation principle for fractional Schr\"odinger equations with scaling-critical and rough potentials via Carleman estimates. Our methods allow to apply the results to variable…

Analysis of PDEs · Mathematics 2016-06-29 Angkana Rüland