ABSTRACT
The fixed points and exponents of the RG for d is -
crete spins defined above have been found numerically by
the authors quoted above. The exponents and other data
for the two-dimensional Ising model are known exactly
from Onsager's solution and provide a check for the numer-
ical RG results. So far the results reported all agree w e ll
with exact results. However, there are still questions
which are unanswered. In this and in the next two sections
we shall attempt to give some qualitative discussion of what
is involved in numerical calculations and some of the r e -
sults and unanswered questions.
