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Commit 2023-01-13 22:32 3310acfa

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feat(order/bounds/basic): add is_greatest_univ_iff etc (#18162) Also add ae_measurable_const' and golf 2 proofs.

Estimated changes

modified theorem is_glb_empty
added theorem is_glb_empty_iff
modified theorem is_glb_univ
modified theorem is_greatest_univ
added theorem is_greatest_univ_iff
modified theorem is_least_univ
added theorem is_least_univ_iff
modified theorem is_lub_empty
added theorem is_lub_empty_iff
modified theorem is_lub_univ