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Theorem ne_zero_of_norm_ne_zero

Modification history

2022-10-06 17:50
src/analysis/normed/group/basic.lean
feat(analysis/normed/group/basic): Multiplicative, noncommutative normed groups (#15705) …
Deleted ne_zero_of_norm_ne_zeroView on Github →
2022-01-26 13:29
src/analysis/normed/group/basic.lean
feat(analysis/seminorm): The norm as a seminorm, balanced and absorbent lemmas (#11487) …
Added ne_zero_of_norm_ne_zeroView on Github →