Set: pp::colors
  Set: pp::unicode
⟨pp::unicode ↦ true, pp::colors ↦ false⟩
  Assumed: a
  Assumed: b
a ∧ b
  Set: lean::pp::notation
⟨lean::pp::notation ↦ false, pp::unicode ↦ true, pp::colors ↦ false⟩
and a b
Variable a : Bool
Variable b : Bool
  Set: lean::pp::notation
⟨lean::pp::notation ↦ true, pp::unicode ↦ true, pp::colors ↦ false⟩
a ∧ b