The fractional relative capacity and the fractional Laplacian with Neumann and Robin boundary conditions on open sets

M Warma - Potential Analysis, 2015 - Springer
Abstract Let Ω⊂ ℝ N Ω⊂R^N be an arbitrary open set with boundary∂ Ω. Let p∈ 1,∞)
p∈1,∞) and s∈(0, 1). In the first part of the article we give some useful properties of the …

[PDF][PDF] Basic estimates for solutions of a class of nonlocal elliptic and parabolic equations

T Leonori, I Peral, A Primo, F Soria - Discrete Contin. Dyn. Syst, 2015 - researchgate.net
The main goal of this work is to study existence, uniqueness and summability of the solution
u with respect to the summability of the datum f. In the process we establish an Lp-theory, for …

Local elliptic regularity for the Dirichlet fractional Laplacian

U Biccari, M Warma, E Zuazua - Advanced Nonlinear Studies, 2017 - degruyter.com
We prove the W loc 2⁢ s, p local elliptic regularity of weak solutions to the Dirichlet problem
associated with the fractional Laplacian on an arbitrary bounded open set of ℝ N. The key …

[HTML][HTML] Fractional Cahn–Hilliard, Allen–Cahn and porous medium equations

G Akagi, G Schimperna, A Segatti - Journal of Differential Equations, 2016 - Elsevier
We introduce a fractional variant of the Cahn–Hilliard equation settled in a bounded domain
Ω⊂ RN and complemented with homogeneous Dirichlet boundary conditions of solid type …

Symmetry via antisymmetric maximum principles in nonlocal problems of variable order

S Jarohs, T Weth - Annali di Matematica Pura ed Applicata (1923-), 2016 - Springer
We consider the nonlinear problem (P)\qquad\left {I u= f (x, u) &\quad in\Omega,\u= 0 &\quad
on\mathbb R^ N ∖ Ω\.(P) I u= f (x, u) in Ω, u= 0 on RN\Ω in an open bounded set Ω ⊂ R^ N …

External optimal control of nonlocal PDEs

H Antil, R Khatri, M Warma - Inverse Problems, 2019 - iopscience.iop.org
Abstract Very recently Warma (2019 SIAM J. Control Optim. to appear) has shown that for
nonlocal PDEs associated with the fractional Laplacian, the classical notion of controllability …

Monotonicity-based inversion of fractional semilinear elliptic equations with power type nonlinearities

YH Lin - Calculus of Variations and Partial Differential …, 2022 - Springer
We investigate the monotonicity method for fractional semilinear elliptic equations with
power type nonlinearities. We prove that if-and-only-if monotonicity relations between …

Controllability of a one-dimensional fractional heat equation: theoretical and numerical aspects

U Biccari… - IMA Journal of …, 2019 - academic.oup.com
We analyse the controllability problem for a one-dimensional heat equation involving the
fractional Laplacian on the interval. Using classical results and techniques, we show that …

Fractional Calderón problems and Poincaré inequalities on unbounded domains

J Railo, P Zimmermann - Journal of Spectral Theory, 2023 - ems.press
We generalize many recent uniqueness results on the fractional Calderón problem to cover
the cases of all domains with nonempty exterior. The highlight of our work is the …

Approximate controllability from the exterior of space-time fractional diffusive equations

M Warma - SIAM Journal on Control and Optimization, 2019 - SIAM
Let Ω⊂R^N be a bounded domain with a Lipschitz continuous boundary. We study the
controllability of the space-time fractional diffusive equation {\mathbbD_t^αu+ …