Mathlib v3 is deprecated. Go to Mathlib v4

Theorem complex.cos_ne_zero_iff

Modification history

2021-09-27 04:20
src/analysis/special_functions/trigonometric/basic.lean
refactor(analysis/special_functions/trigonometric): split file (#9340) …
Modified complex.cos_ne_zero_iffView on Github →
2020-09-06 11:28
src/analysis/special_functions/trigonometric.lean
feat(analysis/special_functions/trigonometric): Added lemmas for deriv of tan (#3746) …
Added complex.cos_ne_zero_iffView on Github →