2024-04-22 20:37:11 +0100 | received badge | ● Notable Question (source) |
2024-04-22 20:37:11 +0100 | received badge | ● Popular Question (source) |
2019-08-14 12:37:28 +0100 | asked a question | Source for Principal Null Directions Kerr, Example Worksheet In the Worksheet "Walker-Penrose Killing tensor in Kerr spacetime" of the SageManifolds project, the sheet gives the principal null directions for Kerr spacetime in Boyer-Lindquist coordinates. I have difficulties verifying (with Mathematica) that this is indeed the case and would appreciate a source. |