Real logarithm identity #59205
DisprovedWorkbookCorrected.plus_59205arithmeticcorrectedelementaryworkbook
The elementary natural-number / rational identity
holds by direct arithmetic evaluation.
Formalization Note: This corrects Lean-Workbook record lean_workbook_plus_59205, which omitted a compilable colon/type annotation and/or used a preamble of only Mathlib.Analysis.Complex.Basic.
Source: InternLM Lean-Workbook, record lean_workbook_plus_59205 (Apache-2.0).
Preamble
import Mathlib.Data.Real.Basic import Mathlib.Analysis.SpecialFunctions.Log.Base import Mathlib.Analysis.SpecialFunctions.Log.Basic import Mathlib.Tactic.Ring import Mathlib.Tactic.FieldSimp import Mathlib.Tactic.Positivity import Mathlib.Tactic.Linarith import Mathlib.Tactic.NormNum
Formal statement
theorem WorkbookCorrected.plus_59205 : Real.log 2 > (2/5) ^ (2/5) := by sorry
Source