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Theorem
ne_zero_of_nnnorm_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_nnnorm_ne_zero
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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_nnnorm_ne_zero
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