A simple proof for a forbidden subposet problem

A dependence of the cost of fast controls for the heat equation on the support of initial datum

The controllability cost for the heat equation as the control time

T

goes to 0 is well-known of the order

e^{C/T}

for some positive constant

C

, depending on the controlled domain and for all initial datum. In this paper, we prove that the constant $C ...

2021