4 ms·
This is like saying the Riemann zeta function is only defined for real numbers. You can always extend the singularity mathematically by incorporating new axioms
by catlifeonmars 2mo ago
This is like saying the Riemann zeta function is only defined for real numbers. You can always extend the singularity mathematically by incorporating new axioms.
My point is, it’s not super meaningful to argue whether a black hole has an inside.
- inigyou 2mo agoI don't mean the coordinate singularity, I mean there is no more spacetime after that.
- skirmish 2mo agoWhy would that happen? In a different coordinate system (Kruskal–Szekeres coordinates) nothing special happens at the event horizon at all.
- inigyou 2mo agoWhy wouldn't it happen? From the perspective of anyone outside the black hole, nothing can ever enter it. What if that's just true?
- catlifeonmars 2mo agoHave you considered that the apparent event horizon is not uniform for all observers? So does spacetime exist in some frames of reference but not others because those frames disagree on the radius of the apparent event horizon? Also note that in general an event horizon doesn’t require a singularity.
- inigyou 2mo agoAll observers outside the black hole agree that nothing ever enters the black hole though.
- catlifeonmars 2mo agoAnd all observers on the event horizon agree that there is no event horizon :) What I’m trying to say is that there is nothing special about the region of space near the event horizon.