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On the Chern number of -admissible filtrations of ideals
Let be an \m-primary ideal of a Noetherian local ring (R, \m) of
positive dimension. The coefficient of the Hilbert polynomial
of an -admissible filtration is called the Chern number of
. A formula for the Chern number has been derived involving Euler
characteristic of subcomplexes of a Koszul complex. Specific formulas for the
Chern number have been given in local rings of dimension at most two. These
have been used to provide new and unified proofs of several results about
Hilbert series of fiber cones of ideals of almost minimal mixed multiplicity
Let (R, m) be a Cohen-Macaulay local ring and I be an m-primary ideal. We
introduce ideals of almost minimal mixed multiplicty which are analogues of
ideals studied by J. Sally.
The main theorem describes the Hilbert series of fiber cones of these ideals.Comment: 12 page
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