1. Hilbert curves of scrolls over threefolds.
- Author
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Fania, Maria Lucia and Lanteri, Antonio
- Subjects
- *
VECTOR bundles , *PLANE curves , *POSSIBILITY - Abstract
Let (X , L) be a complex polarized n -fold with the structure of a classical scroll over a smooth projective threefold Y. The Hilbert curve of such a pair (X , L) is a complex affine plane curve of degree n , consisting of n − 3 evenly spaced parallel lines plus a cubic. This paper is devoted to a detailed study of this cubic. In particular, existence of triple points, behavior with respect to the line at infinity, and non-reducedness, are analyzed in connection with the structure of (X , L). Special attention is reserved to the case n = 4 , where various examples are presented and the possibility that the cubic is itself the Hilbert curve of the base threefold Y for a suitable polarization is discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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