lean_workbook_plus_62734
ProvedFor , prove that:
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_62734 (x y z : ℝ) : |x| + |y| + |z| + |x + y + z| ≥ |x + y| + |y + z| + |z + x| := by sorry
Source
For , prove that:
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_62734 (x y z : ℝ) : |x| + |y| + |z| + |x + y + z| ≥ |x + y| + |y + z| + |z + x| := by sorry