  The inflationary scenario, which states that the early universe underwent a
brief but dramatic period of accelerated spatial expansion, has become the
current paradigm of early universe cosmology. Although inflationary cosmology
has its many successes, it does not (as of yet) have the status of an
established physical theory. In this paper, we provide mathematical support for
the inflationary scenario in a class of anisotropic spacetimes by generalizing
the work in [21]. These anisotropic spacetimes satisfy certain initial
conditions so that they are perfectly isotropic at the big bang but become less
isotropic as time progresses. The resulting inflationary eras are a consequence
of the initial conditions which force the energy-momentum tensor to be
dominated by a cosmological constant at the big bang.
