ther than making up yet another
     new series of names, I am leaving it to the context to
     mark the fact that these Proj's are a suitable sort of
     "extended projections", which take the name of a Table
     in the set T and the number of a Row in the set U, and
     yield the value in the indicated column k, k = 1, 2, 3.

JA:  Well, these are fine and dandy brands of operation,
     but there are a couple of things that they are not:

     1.  They are not less than or equal to 2-adic in their ari