lean_workbook_plus_66173
ProvedProve that for reals
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_66173 (a b c : ℝ) : |a| + |b| + |c| + |a + b + c| ≥ |b + c| + |c + a| + |a + b| := by sorry
Source
Prove that for reals
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_66173 (a b c : ℝ) : |a| + |b| + |c| + |a + b + c| ≥ |b + c| + |c + a| + |a + b| := by sorry