  We introduce a new approach to study the practical stability of hybrid fuzzy
systems on time scales in the Lyapunov sense. Our method is based on the
delta-Hukuhara derivative for fuzzy valued functions and allow us to obtain new
interesting stability criteria. We also show the validity of the results of [M.
Sambandham: Hybrid fuzzy systems on time scales, Dynam. Systems Appl. 12
(2003), no. 1-2, 217-227], by embedding the space of all fuzzy subsets into a
suitable Banach space.
