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math.AC2011
Integral extensions and the a-invariant
Andrew Kustin, Claudia Polini, Bernd Ulrich
In this note we compare the a-invariant of a homogeneous algebra B to the a-invariant of a subalgebra A. In particular we show that if is a finite homogeneous inclusi…
math.AC2011
On the Cohen-Macaulayness of the conormal module of an ideal
Paolo Mantero, Yu Xie
In the present paper we investigate a question stemming from a long-standing conjecture of Vasconcelos: given a generically a complete intersection perfect ideal I in a regular loc…