(d)a∈Cmn({ (an→a)…)∈Taut 4. Suppose we have two assertions, where a and B both are propostions and 2 is a set of positions (a)If∑hA,then∑hB (b)∑F(A→B Show the relation between them. It means whether one can imply another(d) σ ∈ Cn({σ1, . . . , σn}) ⇔ σ1 → (σ2 . . . → (σn → σ). . .) ∈ T aut. 4. Suppose we have two assertions, where α and β both are propostions and Σ is a set of propositions: (a) If Σ |= A, then Σ |= B. (b) Σ |= (A → B). Show the relation between them. It means whether one can imply another. 5