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Theorem has_deriv_at_of_has_deriv_at_of_ne'

Modification history

2021-08-16 15:18
src/analysis/calculus/extend_deriv.lean
feat(analysis): `x^y` is smooth as a function of `(x, y)` (#8262)
Added has_deriv_at_of_has_deriv_at_of_ne'View on Github →