theorem other other

`sigma_one_three_pow_two`

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formal statement (Lean)

 526theorem sigma_one_three_pow_two : sigma 1 (3 ^ 2) = 13 := by native_decide

Lean names referenced from this declaration's body.

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