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Theorem norm_reverse_triangle'

Modification history

2019-11-24 10:11
src/analysis/normed_space/basic.lean
feat(analysis/normed_space): prove more lemmas, rename some old lemmas (#1733) …
Deleted norm_reverse_triangle'View on Github →
2019-04-04 17:16
src/analysis/normed_space/basic.lean
feat (analysis/normed_space/basic.lean): implement reverse triangle inequality (#831) …
Added norm_reverse_triangle'View on Github →