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Commit 2021-08-15 23:17 8e508633

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chore(analysis/normed_space/dual): golf some proofs (#8694)

Estimated changes

Modified src/analysis/normed_space/dual.lean

modified theorem normed_space.double_dual_bound

modified theorem normed_space.dual_def

deleted def normed_space.inclusion_in_double_dual'

added theorem normed_space.inclusion_in_double_dual_norm_eq

added theorem normed_space.inclusion_in_double_dual_norm_le