Special Divisors of Blowup Algebras
نویسندگان
چکیده
The nature of the divisors of a Noetherian ring A provides a window to examine its arithmetical and geometric properties. Here we examine the divisors of Rees algebras of ideals{the so called blowup algebras{from the perspective of the operation of shifting. It permits the organization of some previous results in a more structured manner and at the same time predicts the occurrence of several new divisors. Of these, we single out the fundamental divisor that plays a more basic role than the canonical module.
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تاریخ انتشار 2007