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Commit 2021-01-01 21:25 e0030ffe

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chore(data/real/cau_seq): golf some proofs (#5545)

Estimated changes

Modified src/data/real/cau_seq.lean

added def is_absolute_value.abv_hom

deleted theorem is_absolute_value.abv_one'

modified theorem is_absolute_value.abv_one

modified theorem is_absolute_value.abv_pow