ABSTRACT
There is an important class of translation planes called the ‘André planes,’that may be constructed from the Desarguesian plane by a set of mutually disjoint derivations, that is, by ‘multiple derivation.’ The representation of the spreads have the general formn
x = 0; y = 0; y = xq i
m;m(q n1)=(q1) = ;m 2 GF (qn)
o ,
( i is …xed for each ).
