Main Page

See live article

Alphabetical index
PenroseHawking singularity theorems
Singularity theorems
There are several versions of the
PenroseHawking singularity theorem
. Most versions basically state that if there's a trapped null surface and the
energy density
is nonnegative, then there exists geodesics if finite length which can't be extended.
I have to look up a reference, though