Browsing by Subject "Heat equation"
Now showing items 17 of 7

Identification of the class of initial data for the insensitizing control of the heat equation
(Communications on Pure and Applied Analysis, 20091231)This paper is devoted to analyze the class of initial data that can be insensitized for the heat equation. This issue has been extensively addressed in the literature both in the case of complete and approximate insensitization ... 
Observability of heat processes by transmutation without geometric restrictions
(Mathematical Control and Related Fields, 20111231)The goal of this note is to explain how transmutation techniques (originally introduced in [14] in the context of the control of the heat equation, inspired on the classical Kannai transform, and recently revisited in [4] ... 
Recovery of an initial temperature from discrete sampling
(Mathematical Models and Methods in Applied Sciences, 20141231)The problem of recovering the initial temperature of a body from discrete temperature measurements made at later times is studied. While this problem has a general formulation, the results of this paper are only given in ... 
Regularity issues for the nullcontrollability of the linear 1d heat equation
(Systems and Control Letters, 20111231)The fact that the heat equation is controllable to zero in any bounded domain of the Euclidean space, any time T>0 and from any open subset of the boundary is well known. On the other hand, numerical experiments show ... 
Switching control
(Journal of the European Mathematical Society, 20111231)We analyze the problem of switching controls for control systems endowed with different actuators. The goal is to control the dynamics of the system by switching from an actuator to another in a systematic way so that, at ... 
The asymptotic behaviour of the heat equation in a twisted DirichletNeumann waveguide
(Journal of Differential Equations, 20111231)We consider the heat equation in a straight strip, subject to a combination of Dirichlet and Neumann boundary conditions. We show that a switch of the respective boundary conditions leads to an improvement of the decay ... 
The Hardy inequality and the heat equation in twisted tubes
(Journal des Mathematiques Pures et Appliquees, 20101231)We show that a twist of a threedimensional tube of uniform crosssection yields an improved decay rate for the heat semigroup associated with the Dirichlet Laplacian in the tube. The proof employs Hardy inequalities for ...