Mathlib v3 is deprecated. Go to Mathlib v4

Theorem real.cos_pos_of_neg_pi_div_two_lt_of_lt_pi_div_two

Modification history

2020-09-06 11:28
src/analysis/special_functions/trigonometric.lean
feat(analysis/special_functions/trigonometric): Added lemmas for deriv of tan (#3746) …
Deleted real.cos_pos_of_neg_pi_div_two_lt_of_lt_pi_div_twoView on Github →
2018-10-17 09:25
analysis/exponential.lean
feat(*): trigonometric functions: exp, log, sin, cos, tan, sinh, cosh, tanh, pi, arcsin, argcos, arg (#386) …
Added real.cos_pos_of_neg_pi_div_two_lt_of_lt_pi_div_twoView on Github →