Hyperstability theory is a significant tool for stability proofs of adaptive control, but so far it is only used for deterministic systems.

This paper presents a hyperstable scheme for designing discrete model reference adaptive control system for lineartime-invariant SISO plant, based on a redefined augmented error signal.

So far, demand for quantum dots has been relatively small: they are used in medical imaging, for example, as a form of highly stable and extremely bright dye.