theorem proved term proof

`sigma_two_two`

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formal statement (Lean)

1645theorem sigma_two_two : sigma 2 2 = 5 := by native_decide

Term-mode proof.

1646
1647/-- σ_2(3) = 1 + 9 = 10. -/

Lean names referenced from this declaration's body.

sigma in IndisputableMonolith.Decision.AbileneParadox decl_use
sigma in IndisputableMonolith.NumberTheory.Primes.ArithmeticFunctions decl_use