§FRW
models have a matter dominated singularity (spatial
curvature negligible)
§This is non-generic:
for p=wr (w<1) matter is negligible,
singularities are velocity dominated, Weyl curvature
dominates over Ricci curvature
§Kasner (vacuum Bianchi
I) is paradigmatic
§BLK conjecture:
Bianchi IX ÒmixmasterÓ
(a chaotic sequence of Kasner phases) is generic
§No mixmaster for w=1
and massless scalar field
§Isotropic singularity
for w>1