Stoica, "
Schwarzschild singularity is semi-regularizable," The European Physical Journal Plus, vol.
Spacetime coherency issues aside, the equivalent rest mass energy of the
Schwarzschild singularity goes no way towards counterbalancing its gravitational potential energy which, by any realistic assessment, is infinitely negative.
Now it can be pointed out that while in the case of the Robertson-Walker final singularity, there is a corresponding
Schwarzschild singularity that is connected with the collapse of a gravitating body, the Schwarzschild singularit corresponding to the Robertson-Walker initial singularity is within a vacuum black hole one that does not arise from gravitational collapse.
Rosen, "The nature of
Schwarzschild singularity in "Relativity"," in Proceedings of the Relativity Conference in the Midwest, M.
This metric has a singularity, (denoted by rs) called the
Schwarzschild singularity (or radius) at
These singularities are of two kinds, spacelike singularity (e.g.,
Schwarzschild singularity) and timelike singularity.