pock.1: Make a less fatuous observation.

Of course a has order dividing p - 1 in Z/pZ.  This is Lagrange's
theorem.

It's valuable to observe that a has order dividing n - 1 because this
makes the next step, where we deduce the order of t = a^{(n-1)/q}, work.

diff --git a/pock.1 b/pock.1
index f977ee4..4ebf3a6 100644 (file)
--- a/pock.1
+++ b/pock.1
@@ -472,7 +472,7 @@ the order of
 in
 .RB ( Z /\fIp Z )\*(ss\(**\*(se
 divides
-.I p
+.I n
 \-
 1.
 Consider some prime