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Oct 23 at 19:13 answer added Pipe timeline score: 1
Oct 21 at 23:21 comment added cesaruliana The Hawking Area theorem indeed uses Raychaudhuri equation in its demonstration. But even the simplest proofs use a somewhat idealized blackhole spacetime, and the demonstration depends also on topological notions. Have you seem the demonstration provided in Robert Wald's General Relativity book? I think it is easier than the one in Hawking and Ellis book.
Oct 21 at 21:21 history asked Qubek CC BY-SA 4.0