Definitions | s = t, P Q, Type, left + right, type List, False, x:A B(x), P  Q, x:A. B(x), A, no_repeats(T;l), adjacent(T;L;x;y), x:A B(x), x:A. B(x), L1 L2, x before y l, a < b, (x l), Dec(P), P & Q, P   Q, , A B, Atom, {i..j }, , b, x,y:A//B(x;y), b | a, a ~ b, |p|, a b, a <p b, |g|, a < b, A c B, f(a), x f y, |r|, x L. P(x), ( x L.P(x)), Unit, {T}, Void, t T |