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Observability of heat processes by transmutation without geometric restrictions
The goal of this note is to explain how transmutation techniques (originally introduced in  in the context of the control of the heat equation, inspired on the classical Kannai transform, and recently revisited in  ...
Sharp Observability Estimates for Heat Equations
The goal of this article is to derive new estimates for the cost of observability of heat equations. We have developed a new method allowing one to show that when the corresponding wave equation is observable, the heat ...