pith. machine review for the scientific record. sign in
theorem proved term proof

two_pow_nine

show as:
view Lean formalization →

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

generate prose now

formal statement (Lean)

1824theorem two_pow_nine : (2 : ℕ) ^ 9 = 512 := by native_decide

proof body

Term-mode proof.

1825
1826/-! ### σ_3 values (sum of cubes of divisors) -/
1827
1828/-- σ_3(1) = 1. -/

depends on (5)

Lean names referenced from this declaration's body.