Graduate Kerr Metric: Removing Singularity via Coordinate Transformation

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The discussion centers on whether the singularity of the Kerr metric can be removed through a coordinate transformation, similar to the Schwarzschild metric's transformation to Kruskal-Szekeres coordinates. Participants explore the potential existence of a specific coordinate system that could achieve this for the Kerr metric. The conversation highlights the complexities involved in applying coordinate transformations to rotating black holes. Key terms and concepts related to the Kerr metric and singularities are examined. The thread ultimately seeks to clarify the applicability of these transformations in the context of general relativity.
Arman777
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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?
 
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Thread 'Question about Parallel Transport'

In this video I can see a person walking around lines of curvature on a sphere with an arrow strapped to his waist. His task is to keep the arrow pointed in the same direction How does he do this ? Does he use a reference point like the stars? (that only move very slowly) If that is how he keeps the arrow pointing in the same direction, is that equivalent to saying that he orients the arrow wrt the 3d space that the sphere is embedded in? So ,although one refers to intrinsic curvature...
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