theorem proved term proof

`totient_five`

No prose has been written for this declaration yet. The Lean source and graph data below render without it.

formal statement (Lean)

 477theorem totient_five : totient 5 = 4 := by

Term-mode proof.

 478  native_decide
 479
 480/-- φ(6) = 2. -/

Lean names referenced from this declaration's body.

totient in IndisputableMonolith.NumberTheory.Primes.ArithmeticFunctions decl_use