Symmetric_Difference_with_Empty_Set
Provedempty-setproofwikisymmetric-difference
The symmetric difference of a set S with the empty set is S: S △ ∅ = S
Preamble
import Mathlib.Order.SymmDiff import Mathlib.Data.Set.Basic
Formal statement
theorem Symmetric_Difference_with_Empty_Set {α : Type _} (S : Set α) : symmDiff S ∅ = S := by sorrySource