Apr 29, 2015
#40 β ∈ ℝ such that β + β⁻¹ ∈ ℤ. Prove that βⁿ + β⁻ⁿ ∈ ℤ ∀ n ∈ ℕ
As title.
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#40 β ∈ ℝ such that β + β⁻¹ ∈ ℤ. Prove that βⁿ + β⁻ⁿ ∈ ℤ ∀ n ∈ ℕ
As title.