| Definitions |  A,  b, null(as), #$n, p-outcome(p),  , P   Q, decidable(P), P  Q, left + right, isect(A; x.B(x)), void, finite-prob-space, {x:A| B(x)} , P  Q, subtype(S; T),  x:A. B(x), x:A   B(x), rationals, t  T, type List, top, int_seg(i; j), lelt(i; j; k), x:A  B(x), A  B, a < b,  , False, True, ge(i; j), n + m, ||as||, [], cons(car; cdr) |