ion r = s/t
whose denominator is the power of two t = 2^m and whose numerator is a
binary numeral that is formed from the coefficients of state in a manner
to be described next.  The &quot;differential coefficients&quot; of the state q are
just the values d^k.A(q), for k = 0 to m, where d^0.A is defined as being
identical to A.  To form the binary index d_0 . d_1 ... d_m of the state q
the coefficient d^k.A(q) is read off as the binary digit d_k associated with
the place value 2^(-k).  Expressed by way of a