Truth∨ aluation How we discuss the truth of propositions? Exampl e Truth assignment of a and B and valuation of (av B B(a③)Truth Valuation How we discuss the truth of propositions? . Example . . Truth assignment of α and β and valuation of (α ∨ β). α β (α ∨ β) T T T T F T F T T F F F Yi Li (Fudan University) Discrete Mathematics April 2, 2013 5 / 20