Glossary
Fixed-time and finite-time control and estimation

AS ; asymptotic stability

A basic kind of stability of the equilibrium at the origin for a dynamical systems, when all trajectories are bounded and approaching zero

FTS ; finite-time stability

A variant of asymptotic stability, when all trajectories reach zero in a finite time dependent on initial conditions

FxTS ( fixed-time stability )

A kind of finite-time stability, then the upper bound on the settling time is independent in initial conditions

nFxTS ( nearly fixed-time stability )

A kind...