:: deftheorem Def3 defines basic AOFA_A01:def 3 :
for S being non empty non void ManySortedSign
for X being V3() ManySortedSet of the carrier of S
for T being b₂,b₁ -terms all_vars_including inheriting_operations MSAlgebra over S
for G being GeneratorSet of T holds
( G is basic iff FreeGen T c= G );