Truth Assignment How we discuss the truth of propositional letters? Definition(Assig gnment a truth assignment a is a function that assigns to each propositional letter Aa unique truth value A(A)∈{T,F}Truth Assignment How we discuss the truth of propositional letters? Definition (Assignment) A truth assignment A is a function that assigns to each propositional letter A a unique truth value A(A) ∈ {T, F}. Yi Li (Fudan University) Discrete Mathematics April 1, 2012 4 / 20