theorem
proved
term proof
five_three_lt_two_seven
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formal statement (Lean)
50theorem five_three_lt_two_seven : (5 : ℕ)^3 < 2^7 := by decide
proof body
Term-mode proof.
51
52/-- The information-bound theorem: 5^k < 2^(⌈k·log_2 5⌉ + 1) for small k. -/