Abstract
A construction is given which provides infinitely many examples of bilinear flocks of quadratic cones in PG(3,K) whereK is an infinite field. The corresponding translation planes admit SL(2,K) as a collineation group.
Similar content being viewed by others
References
L. Bader, G. Lunardon, andJ.A. Thas. Derivation of flocks of quadratic cones. Forum Mathematicum2 (1990), 163–174.
D. Betten. On the classification of 4-dimensional flexible projective planes. Mostly Finite Geometries. Lecture Notes in Pure and Applied Mathematics, vol. 190. Marcel Dekker, 1997, 9–34.
F. De Clerck andH. Van Maldeghem. Flocks of an infinite quadratic cone. Bull. Belgian Math. Soc./Simon Stevin2, no. 3 (1994), 399–415.
P. Dembowski. Finite Geometries. Springer-Verlag, Berlin-Heidelberg-New York, 1967.
J. Dieudonné. La géométrie des groupes classiques. Springer, Berlin-Göttingen-Heidelberg, 1955.
D.A. Foulser andN.L. Johnson. The translation planes of orderq 2 that admit SL(2,q) as a collineation group. I. Even order. J. Algebra86 (1984), 385–406. The translation planes of orderq 2 that admit SL(2,q as a collineation group. II. Odd order. J. Geom.18 (1982), 122–139.
D.A. Foulser, N.L. Johnson, andT.G. Ostrom. Characterization of the Desarguesian planes of orderq 2 by SL(2,q). Internat. J. Math, and Math. Sci.6 (1983), 605–608.
H. Gevaert andN.L. Johnson. On maximal partial spreads in PG(3,q) of cardinalitiesq 2−q+1,q 2−q+2. Ars Combin.26 (1988), 191–196.
H. Gevaert andN.L. Johnson. Flocks of quadratic cones, generalized quadrangles, and translation planes. Geom. Dedicata27 (1988), 301–317.
H. Gevaert, N.L. Johnson, andJ.A. Thas. Spreads covered by reguli. Simon Stevin62 (1988), 51–62.
V. Jha andN.L. Johnson. Quasifibrations. Bull. Belgian Math. Soc./Simon Stevin3 (1996), 313–324.
V. Jha andN.L. Johnson. Infinite flocks of a quadratic cone. J. Geom.57 (1996), 123–150.
N.L. Johnson. Flocks and partial flocks of quadric sets. Contemp. Math.111 (1990), 111–116.
N.L. Johnson. Derivation of partial flocks of quadratic cones. Rend. Mat. Appl. (7)12 (1992), 817–848.
N.L. Johnson. Flocks of infinite hyperbolic quadrics. J. Algebraic Combin.6 (1997), 27–51.
N.L. Johnson. Extending partial flocks containing linear subflocks. J. Geom.55 (1996), 99–106.
H. Lüneburg. Translation planes. Springer-Verlag, Berlin-Heidelberg-New York, 1980.
W.F.Orr. The Miquelian inversive planeIP(q) and the associate projective planes. Ph.D. Thesis (Madison, Wisconsin, May 1973).
T.G. Ostrom. Vector spaces and construction of finite projective planes. Arch. Math. (Basel)19 (1968), 1–25.
S.E. Payne andJ.A. Thas. Conical flocks, partial flocks, derivation, and generalized quadrangles. Geom. Dedicata38 (1991), 229–243.
H.Salzmann, D.Betten, T.Grundhöfer, H.HÄhl, R.Löwen, and M.Stroppel. Compact Projective Planes. De Gruyter Expositions in Mathematics 21. Berlin-New York 1995.
J.A. Thas. Generalized quadrangles and flocks of cones. European J. Combin.8 (1987), 441–452.
J.A. Thas. Flocks, maximal exterior sets and inversive planes. Contemp. Math.111 (1990), 187–218.
J.A.Thas. Flocks of finite egglike inversive planes,in “Finite Geometric Structures and their applications.” (Edited by A. Barlotti). Rome (1973), 189–191.
H.Schaeffer. Translationsebenen, auf denen die gruppe SL(2,pn) operiert. Diplomarbeit Univ. Tübingen, 1975.
M.Walker. On translation planes and their collineation groups. Thesis, Univ. London, 1973.
Author information
Authors and Affiliations
Additional information
This article was written while the second author was visiting the University of Lecce during May and June of 1995. The authors gratefully acknowledge the support of the University of Lecce and the C.N.R. The authors would like to thanks for referees for helpful suggestions with the writing of this article.
Rights and permissions
About this article
Cite this article
Biliotti, M., Johnson, N.L. Bilinear flocks of quadratic cones. J Geom 64, 16–50 (1999). https://doi.org/10.1007/BF01229210
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01229210