On page 292 line 3 we incorrectly state
that that the automorphism group of
the projective space * PG _{m-1}(q) * is the
projective linear group

We do not need to know what the automorphism group is, but for the sake of completeness we mention that it is given by the fundamental theorem of projective geometry:

* Aut(PG _{m-1}(q)) * is the semi-direct product
of the projective linear group

Thanks to Richard Wilson for this correction.