Nonlinear Evolution
•Pancake model: HDM or adiabatic baryons you get a characteristic collapse scale.  “Azita’s House of Pancakes.”  Galaxies form from pancake fragmentation.
•Heirarchical scenarios.  Isothermal fluctuations or CDM gives no cutoff at small scales.  Some details in the text for particular cosmologies (which we will wait on).
•Numerical simulations pay a serious role here.
•More details in text, but we’re rush, rush, rush at this point.  Feel the knowledge flooding your brain, but don’t drown!