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Geometric Algebra seems to provide numerous insights and simplify many calculations. However, I've seen very little about the Weyl tensor.

I was wondering if anybody knows if it provides a more straightforward way to prove that:

  1. The Weyl tensor is invariant under conformal transformations
  2. The Weyl tensor vanishes for a FLRW universe.

Maybe these identities have a geometric interpretation that gets better understood or simplified in GA.

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