Title: Subgradients of Minimal Time Functions without Calmness,
Abstract: In recent years there has been great interest in variational analysis of a
class of nonsmooth functions called the minimal time function. In this paper we
continue this line of research by providing new results on generalized
differentiation of this class of functions, relaxing assumptions imposed on the
functions and sets involved for the results. In particular, we focus on the
singular subdifferential and the limiting subdifferential of this class of
functions.