[PatrickHenry]

The others are mass and (I think) electric charge.

I don't think electric charge survives. Just mass and spin. But the mass which was the big bang probably wasn't even spinning, in that there was no reference frame for determining spin.

[longshadow]

I don't think electric charge survives. Just mass and spin. But the mass which was the big bang probably wasn't even spinning, in that there was no reference frame for determining spin.

I'm sure there are THREE parameters that describe a BH; if electric charge ISN'T the third one (after mass and angular momentum), then I'm not sure what it would be...

[longshadow]

Ah, here it is; the "Black Hole has No Hair" Theorem:

"Another way of stating this is that outside of the event horizon all properties of the matter that formed it are gone except for the total mass-energy, rotation, and electric charge: this is sometimes called the Black Hole Has No Hair theorem."

[Physicist]

Black holes can have electric charge.