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JOURNALS // Izvestiya Rossiiskoi Akademii Nauk. Seriya Matematicheskaya // Archive

Izv. RAN. Ser. Mat., 2022 Volume 86, Issue 2, Pages 80–127 (Mi im9073)

This article is cited in 1 paper

The generalized Plücker–Klein map

V. A. Krasnov

P.G. Demidov Yaroslavl State University

Abstract: The intersection of two quadrics is called a biquadric. If we mark a non-singular quadric in the pencil of quadrics through a given biquadric, then the given biquadric is called a marked biquadric. In the classical papers of Plücker and Klein, a Kummer surface was canonically associated with every three-dimensional marked biquadric (that is, with a quadratic line complex provided that the Plücker–Klein quadric is marked). In Reid's thesis, this correspondence was generalized to odd-dimensional marked biquadrics of arbitrary dimension $\geqslant 3$. In this case, a Kummer variety of dimension $g$ corresponds to every biquadric of dimension $2g-1$. Reid only constructed the generalized Plücker–Klein correspondence. This map was not studied later. The present paper is devoted to a partial solution of the problem of creating the corresponding theory.

Keywords: Plücker–Klein map, quadric, pencil of quadrics, biquadric, marked biquadric, cosingular biquadrics, Klein variety.

UDC: 512.7

MSC: 14P25, 14N25

Received: 22.06.2020

DOI: 10.4213/im9073


 English version:
Izvestiya: Mathematics, 2022, 86:2, 291–333

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© Steklov Math. Inst. of RAS, 2025