Is mass, angular momentum, and charge sufficient for black hole characterization? Or is also entropy, and hence surface area, also required? Thus is the shape for a given mass black hole also a required consideration?
For real, astrophysical black-holes -- the charge can be assumed to be zero, as a black-hole will be formed from (ridiculously close to) equal numbers of protons and electrons. But all three parameters are actually needed for a complete description, as Nabeshin said---according to the http://en.wikipedia.org/wiki/No_hair_theorem" [Broken]From all the reading I've done, I gather that the mass and spin are the properties that matter.