activity
20182026
most citedRecovery of time dependent coefficients from boundary data for hyperbolic equations

45 citations · 298 across the 36 of their papers we have counts for

collaborators

37 papers

math.AP2026

Fractional Calderón problem with a potential

Ali Feizmohammadi, Katya Krupchyk, Gunther Uhlmann

We prove that the knowledge of local Cauchy data for a fractional Schrödinger equation on a smooth closed and connected Riemannian manifold of dimension at least two determines the…

math.AP2026

The planar Calderón problem for potentials

Ali Feizmohammadi

We prove that the Dirichlet-to-Neumann map associated to the Schrödinger operator on a planar bounded Lipschitz domain uniquely determines an arbitrary complex-valued potent…

math.AP2025

Recovery of Sturm-Liouville operators from partial boundary spectral data and applications

Ali Feizmohammadi, Yavar Kian

We study the inverse Sturm-Liouville problem on a finite interval from partial knowledge of spectral data. Specifically, we show that the potential can be uniquely reconstructed fr…

math.AP2025

Inverse spectral problems with sparse data and applications to passive imaging on manifolds

Ali Feizmohammadi, Katya Krupchyk

Motivated by inverse problems with a single passive measurement, we introduce and analyze a new class of inverse spectral problems on closed Riemannian manifolds. Specifically, we…

math.AP2025

Simultaneous Identification of Coefficients and Source in a Subdiffusion Equation from One Passive Measurement

Maolin Deng, Ali Feizmohammadi, Bangti Jin +1

This article is devoted to the detection of parameters in anomalous diffusion from a single passive measurement. More precisely, we consider the simultaneous identification of coef…

math.AP2025

Fractional anisotropic Calderón problem with external data

Ali Feizmohammadi, Tuhin Ghosh, Katya Krupchyk +3

In this paper, we solve the fractional anisotropic Calderón problem with external data in the Euclidean space, in dimensions two and higher, for smooth Riemannian metrics that agre…

math.AP2025★ 1 cited

Reconstruction of 1-D evolution equations and their initial data from one passive measurement

Ali Feizmohammadi

We study formally determined inverse problems with passive measurements for one dimensional evolution equations where the goal is to simultaneously determine both the initial data…

math.AP2024★ 1 cited

Entanglement principle for the fractional Laplacian with applications to inverse problems

Ali Feizmohammadi, Yi-Hsuan Lin

We prove an entanglement principle for fractional Laplace operators on for as follows; if different fractional powers of the Laplace operator acting on seve…

math.AP2024

Calderón problem for fractional Schrödinger operators on closed Riemannian manifolds

Ali Feizmohammadi, Katya Krupchyk, Gunther Uhlmann

We study an analog of the anisotropic Calderón problem for fractional Schrödinger operators with on closed Riemannian manifolds of dimensions two and hig…

math.AP2024

Partial data inverse problems for reaction-diffusion and heat equations

Ali Feizmohammadi, Yavar Kian, Gunther Uhlmann

We study partial data inverse problems for linear and nonlinear parabolic equations with unknown time-dependent coefficients. In particular, we prove uniqueness results for partial…

math.AP2024

Two uniqueness results in the inverse boundary value problem for the weighted p-Laplace equation

Cătălin I. Cârstea, Ali Feizmohammadi

In this paper we prove a general uniqueness result in the inverse boundary value problem for the weighted p-Laplace equation in the plane, with smooth weights. We also prove a uniq…

math.AP2023★ 2 cited

Rigidity of inverse problems for nonlinear elliptic equations on manifolds

Ali Feizmohammadi, Yavar Kian, Lauri Oksanen

We consider the inverse problem of determining coefficients appearing in semilinear elliptic equations stated on Riemannian manifolds with boundary given the knowledge of the assoc…

math.AP2022★ 5 cited

Remarks on the anisotropic Calderón problem

Cătălin I. Cârstea, Ali Feizmohammadi, Lauri Oksanen

We show uniqueness results for the anisotropic Calderón problem stated on transversally anisotropic manifolds. Moreover, we give a convexity result for the range of Dirichlet-to-Ne…

math.AP2022★ 3 cited

An inverse boundary value problem for isotropic nonautonomous heat flows

Ali Feizmohammadi

We study an inverse boundary value problem on the determination of principal order coefficients in isotropic nonautonomous heat flows stated as follows; given a medium, and in the…

math.AP2021★ 10 cited

An inverse problem for a semilinear elliptic equation on conformally transversally anisotropic manifolds

Ali Feizmohammadi, Tony Liimatainen, Yi-Hsuan Lin

Given a conformally transversally anisotropic manifold , we consider the semilinear elliptic equation We show that an a priori unk…

math.AP2021★ 10 cited

Fractional anisotropic Calderón problem on closed Riemannian manifolds

Ali Feizmohammadi, Tuhin Ghosh, Katya Krupchyk +1

In this paper we solve the fractional anisotropic Calderón problem on closed Riemannian manifolds of dimensions two and higher. Specifically, we prove that the knowledge of the loc…

math.AP2021★ 5 cited

Lorentzian Calderón problem near the Minkowski geometry

Spyros Alexakis, Ali Feizmohammadi, Lauri Oksanen

We study a Lorentzian version of the well-known Calderón problem that is concerned with determination of lower order coefficients in a wave equation on a smooth Lorentzian manifold…

math.AP2021★ 8 cited

An inverse problem for a quasilinear convection--diffusion equation

Ali Feizmohammadi, Yavar Kian, Gunther Uhlmann

We study the inverse problem of recovering a semilinear diffusion term as well as a quasilinear convection term in a nonlinear parabolic equation $$\…

math.AP2021★ 9 cited

Fractional Calderón problem on a closed Riemannian manifold

Ali Feizmohammadi

Given a fixed , we study the inverse problem of recovering the isometry class of a smooth closed and connected Riemannian manifold , given the knowledge of a sou…

math.NA2021★ 9 cited

Spacetime finite element methods for control problems subject to the wave equation

Erik Burman, Ali Feizmohammadi, Arnaud Munch +1

We consider the null controllability problem for the wave equation, and analyse a stabilized finite element method formulated on a global, unstructured spacetime mesh. We prove err…

math.AP2021★ 5 cited

The Calderón inverse problem for isotropic quasilinear conductivities

Cătălin I. Cârstea, Ali Feizmohammadi, Yavar Kian +2

We prove a global uniqueness result for the Calderón inverse problem for a general quasilinear isotropic conductivity equation on a bounded open set with smooth boundary in dimensi…

math.AP2020★ 7 cited

Reconstruction in the Calderón problem on conformally transversally anisotropic manifolds

Ali Feizmohammadi, Katya Krupchyk, Lauri Oksanen +1

We show that a continuous potential can be constructively determined from the knowledge of the Dirichlet-to-Neumann map for the Schrödinger operator on a conformally t…

math.AP2020★ 12 cited

Lorentzian Calderón problem under curvature bounds

Spyros Alexakis, Ali Feizmohammadi, Lauri Oksanen

We introduce a method of solving inverse boundary value problems for wave equations on Lorentzian manifolds, and show that zeroth order coefficients can be recovered under certain…

math.AP2020★ 7 cited

A density property for tensor products of gradients of harmonic functions and applications

Cătălin I. Cârstea, Ali Feizmohammadi

We show that tensor products of gradients of harmonic functions, with at least three, are dense in , for any bounded domain in dimension 3 or higher. The…