Set: pp::colors Set: pp::unicode Assumed: a Assumed: b a ∧ b a ∧ b ∧ a a ∧ b a ∧ b a ∧ b a ∧ b a ∨ b a ∨ b a ∨ b a ∨ b a ∨ a ∨ b a → b → a a → b : Bool a → a ⊤ → a Assumed: H1 Assumed: H2