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A comment on I stopped working on black hole information loss. Parent comment

Re:I stopped working on black hole information loss by paulpauper on Saturday April 23, 2022 @10:46PM (#31140839)
they involve matrices
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Re:I stopped working on black hole information loss by hither_shores on Sunday April 24, 2022 @09:28AM (#31143757)
They also involve addition, but that doesn't make them arithmetic. Knowing linear algebra gets you perhaps 10% of the way to having the math background for a first course in GR.
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