Cool. So, as the circumference of the black hole shrinks, the rate of spin increases, correct? If the circumference approaches zero, what happens to the rate of spin? Would this have any effect on a practical limit to how small a black hole could become?
Ok, I've been wondering about this question for many years and I don't know whether I just don't understand the basic concepts enough.
If you have a rapidly-spinning neutron star that continues to collapse down to a singularity, what happens to the conservation of angular momentum from the...