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Linear Systems of Cubics Singular at General Points of Projective Space

Published online by Cambridge University Press:  04 December 2007

Karen A. Chandler
Affiliation:
Department of Mathematics, University of Notre Dame, Notre Dame, IN 46556, U.S.A. e-mail: [email protected]
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Abstract

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We present an elementary proof that given a general collection of d points in Pn the linear system of cubics singular on each point has the expected codimension except when n=4 and d=7. In that case the cubic is unique. This, together with previous work of the author, gives a proof of the Alexander–Hirschowitz interpolation theorem.

Type
Research Article
Copyright
© 2002 Kluwer Academic Publishers