
 Aa
 Aa
Let A be a commutative ring. We denote by a standard
Aalgebra a commutative graded Aalgebra
U=[oplus ]n[ges ]0Un
with U0=A and such that U is generated
as an
Aalgebra by the elements of U1.
Take
In this paper we give two descriptions of the Amodule
of effective nrelations.
In terms of André–Quillen homology we have that
E(U)n=
H1(A, U, A)n
(see 2·3).
It turns out that this module does not depend on the chosen
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