## Innovations in Incidence Geometry

#### Abstract

In this article, it is shown that every flock of a hyperbolic quadric $H$ and every flock of a quadratic cone $C$ in $PG ( 3 , K )$, for $K$ a field, is in a transitive parallelism of $H$ or $C$, respectively. Furthermore, it is shown it is possible to have parallelisms of quadratic cones by maximal partial flocks. The theory of parallelisms of quadratic cones is generalized to analogous results for parallelisms of $α$-cones.

#### Article information

Source
Innov. Incidence Geom., Volume 12, Number 1 (2011), 21-34.

Dates
Accepted: 25 September 2009
First available in Project Euclid: 28 February 2019

https://projecteuclid.org/euclid.iig/1551323064

Digital Object Identifier
doi:10.2140/iig.2011.12.21

Mathematical Reviews number (MathSciNet)
MR2942715

Zentralblatt MATH identifier
1305.51007

#### Citation

Cherowitzo, William E.; Johnson, Norman L. Parallelisms of quadric sets. Innov. Incidence Geom. 12 (2011), no. 1, 21--34. doi:10.2140/iig.2011.12.21. https://projecteuclid.org/euclid.iig/1551323064

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