Definitions | t T, x:A. B(x), State(ds), x:AB(x), S T, State(ds), Id, Type, Top, f(x)?z, Prop, S T, @i Precondition for a(v)P State(ds) (v:T), es is an event system of D, ES, {x:A| B(x) }, x.A(x), {T}, P Q, x. t(x), Dsys, D1 D2, D realizes es. P(es), A & B, , MsgA, a = b, if b t else f fi, @i: A, a:A fp B(a), @i (with ds: ds action a:T precondition a(v) is P s v), (with ds: ds action a:T precondition a(v) is P s v) |