In this paper we study the compactification conditions of the M theory
on D-dimensional noncommutative tori. The main tool used for this ana
lysis is the algebra A(Z(D)) of the projective representations of the
abelian group Z(D). We exhibit the explicit solutions in the space of
the multiplication algebra of A(Z(D)), that is the algebra generated b
y right and left multiplications. (C) 1998 Elsevier Science B.V. All r
ights reserved.