@bgreene Also thanks to NJA (algorithm): https://t.co/1C30Ngv0d5
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RT @pascalkwanten: An explanation of the good old "Newman-Janis Algorithm" (S. P. Drake & P. Szekeres, 1998): The Kerr-metric obtained fro…
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@jfpas Also: Kerr tetrads are the complexified Schwarzschild tetrads: "Janis-Newman algorithm": https://t.co/wEI0FczGWf
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@JasonHise64 @johncarlosbaez @BartoszMilewski @StartsWithABang Complexification often leads to interesting (more rich) new solutions indeed, like the complexification of the Schwarzschild vierbein/tetrad components that leads the Kerr metric, via Newman-Ja