# Singularities of the Coordinate Systems

We know that, the singularity of the Schwarzschild metric at $$r=2M$$ can be removable via coordinate transformation to Kruskal-Szekers . Can we apply a similar argument to the Kerr metric? If so, what's the name of this coordinate system?

• There are uncountably infinitely many different such coordinate systems. I described one example in the second half of this answer. – Chiral Anomaly Jun 9 at 0:09