  Assuming a cellular structure for the space-time, we propose a model in which
the expansion of the universe is understood as a decrumpling process, much like
the one we know from polymeric surfaces. The dimension of space is then a
dynamical real variable. The generalized Friedmann equation, derived from a
Lagrangian, and the generalized equation of continuity for the matter content
of the universe, give the dynamics of our model universe. This leads to an
oscillatory non-singular model with two turning points for the dimension of
space.
