A model for a noncontinuous spacetime is considered, which is based on
a generalization of the manifold concept, known as d-space. As a cons
equence of its construction, the model possesses a metric of Lorentzia
n signature and a generalized form of Lorentz invariance. The model ma
y be considered as defining a class of discrete spacetimes within the
framework of the d-space representation of general relativity.