In this paper we study rings defined by ideals of pfaffians of a ladder. We prove that they are Cohen-Macaulay normal domains and we determine those which are Gorenstein. Further we compute the u-invariant in terms of the shape of the ladder.
Pfaffian ideals of ladders
DE NEGRI, EMANUELA
1998-01-01
Abstract
In this paper we study rings defined by ideals of pfaffians of a ladder. We prove that they are Cohen-Macaulay normal domains and we determine those which are Gorenstein. Further we compute the u-invariant in terms of the shape of the ladder.
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