Energy for Cosmology by Jim Nester

1. Bianchi Cosmology: homogeneous (but not isotropic)

2. We need the model investigated to be isotropic.

3. Find some special cases for isotropic in Bianchi Cosmology.

4. If we classified the 9 types of Bianchi Cosmology, there are 2 classes:

    Class A: Type I, II, VIII, IX.

    Class B: Type III to VII_{h}

5. Few cases can be isoptropic:

    Bianchi I –> FLRW (k=0)

    Bianchi V(VII_{h}) –> FLRW (k=-1)

    Bianchi IX –> FLRW (k=1)

…