Theorems · Theorem · number theory
Nat.ascFactorial_of_sub
∀ {n k : ℕ}, (n - k) * (n - k + 1).ascFactorial k = (n - k).ascFactorial (k + 1)- Defined in
- Mathlib.Data.Nat.Factorial.Basic
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- Foundations
- Depth 20 from the axioms · uses propext
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- Nat.ascFactorialstatement and proof · cited by 41
- Nat.ascFactorial_succproof · cited by 4
- Nat.succ_ascFactorialproof · cited by 3
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