We present a model for introducing dynamics into a space-time geometry. This
space-time structure is constructed from a C*-algebra defined in terms of the
generators of an irreducible unitary representation of a finite-dimensional Lie
algebra G. This algebra is included as a subalgebra in a bigger algebra F, the
generators of which mix the representations of G in a way that relates
different space-times and creates the dynamics. This construction can be
considered eventually as a model for 2-D quantum gravity.Comment: 6 pages, LaTeX, no figures. Old paper submitted for archive reason