Lean-Workbook Plus 23480: Logarithmic identity

Proved

WorkbookRestored.plus_23480

by wamlart · Sep 12, 2026 · Mathlib 777aaa6 (Lean v4.29.0-rc3)

lean-workbookrestored-importssource-checked

$\log_4 8=3/2$ .

Source: Lean-Workbook row lean_workbook_plus_23480 (Apache-2.0). The unchanged proposition comes from the original record; its missing mathematical imports and namespaces are restored here.

Preamble

import Mathlib.Analysis.SpecialFunctions.Log.Base
open Real

Formal statement

theorem WorkbookRestored.plus_23480 : Real.logb 4 8 = 3 / 2   :=  by sorry

Source

https://huggingface.co/datasets/internlm/Lean-Workbook/blob/main/lean_workbook.json, row lean_workbook_plus_23480; immutable original Prove2Me node 58266548-c5b4-47c1-af8a-c56f1d560d28

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