The Geometry of Border Bases

Details The Geometry of Border Bases The Geometry of Border Bases

2010-04-07

arxiv.org/abs/1004.1044v1

Mathematics

Commutative Algebra

Scientific paper

The main topic of the paper is the construction of various explicit flat families of border bases. To begin with, we cover the punctual Hilbert scheme Hilb^\mu(A^n) by border basis schemes and work out the base changes. This enables us to control flat families obtained by linear changes of coordinates. Next we provide an explicit construction of the principal component of the border basis scheme, and we use it to find flat families of maximal dimension at each radical point. Finally, we connect radical points to each other and to the monomial point via explicit flat families on the principal component.

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