[CST-2] Types

M.Y.W.Y. Becker mywyb2@cam.ac.uk
Sat, 02 Jun 2001 14:35:29 +0100


Just for completeness:

Lift_g_d = \f:g->d, x:Opt_g (x Opt_d None_d \y:g(Some_d(f y))).

Mo