This paper deals with continuum systems, where a continuous degree of
performance levels between perfect functioning and complete failure is
allowed. Here we shall assume that the system can be modeled as a str
ucture function given by a mapping from the n-dimensional unit hypercu
be into a k-dimensional unit hypercube, in such a way that the perform
ance of the system is described according to k single continuum-valued
criteria. Some basic concepts relative to these continuum multivalued
systems are discussed and general reliability bounds are obtained bas
ed upon the minimal paths and minimal cuts of the k associated single-
valued continuum systems.