  If L is a complete ortholattice, f any partial function from L^n to L, then
there is a complete ortholattice L* containing L as a subortholattice, and an
ortholattice polynomial with coefficients in L* which represents f on L^n.
  Iterating this construction long enough yields a complete ortholattice in
which every function can be interpolated by a polynomial on any set of small
enough cardinality.
