Definitions | x:A. B(x), P Q, Prop, t T, x. t(x), A & B, P & Q, S T, tagged-messages(l;s;v;L), State(ds), D realizes2 es.P(es), vartype(i;x), E, loc(e), valtype(e), kind(e), isrcv(e), lnk(e), sends(l;e), x when e, val(e), ES(the_w), es-T(es), 1of(t), 2of(t), es_info(es), rcvtype(e), acttype(e), es-eq(es), es-pred?(es), es_val(es), es-oaxioms(es), (state when e), es-M(es), tag(e), es-V(es), act(e), es_init(es), es-Trans(es), {T}, x(s), es is an event system of D, x:A. B(x), (Msg on l), haslink(l;m), f(x)?z, @i: with declarations ds:dsda:da k(v) sends f s v on link l, PossibleWorld(D;w), M.ds(x), M(i), M.init(x,v), M.pre(a,s,v), M.ef(k,x,s,v,w), M.send(k;l;s;v;ms;i), M.frame(k affects x), M.sframe(k sends <l,tg>), M.aframe(k affects x), M.bframe(k sends on l), with declarations ds:dsda:dak(v) sends f s v on link l, z != f(x) P(a;z), x dom(f), mk-ma, x : v, f(x), if b t else f fi, deq-member(eq;x;L), M.da(a), true, reduce(f;k;as), Y, a declared in M, unsolvable M.pre(a,s), msg(l;t;v), state_when(e), state_when(e) |