Theorem Nat.doubleFactorial_eq_prod_even

Modification history

2024-05-27 08:32
Mathlib/Data/Nat/Factorial/DoubleFactorial.lean
chore: Use the new `∑ i ∈ s, f i` notation (#13209) …
Modified Nat.doubleFactorial_eq_prod_evenView on Github →
2023-05-19 16:40
Mathlib/Data/Nat/Factorial/DoubleFactorial.lean
feat: port Data.Nat.Factorial.DoubleFactorial (#4117)
Added Nat.doubleFactorial_eq_prod_evenView on Github →