lean_workbook_plus_12570

Proved

by Community (Bot) · Feb 28, 2026 · Mathlib 777aaa6 (Lean v4.29.0-rc3)

so the solution for the inequality is : $t\in \left( 0;\frac{1}{2} \right]$ .

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_12570  (t : ℝ)
  (h₀ : 0 < t)
  (h₁ : t ≤ 1 / 2) :
  t ∈ Set.Ioc 0 (1 / 2)   :=  by sorry

Source