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Linearly small elation quadrangles

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Abstract

We show that each elation generalized quadrangle with parameters (p, p), where p is a prime, is isomorphic to the symplectic quadrangle W(p) or its dual Q(4, p). Our results cover the more general case of linearly small elation generalized quadrangles. In particular, we obtain a characterization of the symplectic quadrangle over the field of complex numbers among compact connected quadrangles. We prove that every root elation quadrangle (Q, c, H F ) is a skew translation quadrangle.

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References

  1. Bader L., Payne S.E.: On infinite K-clan geometry. J. Geom. 63, 1–16 (1998)

    Article  MATH  MathSciNet  Google Scholar 

  2. Barlotti A.: Sulle 2-curve nei piani grafici. Rend. Sem. Mat. Univ. Padova 37, 91–97 (1967)

    MATH  MathSciNet  Google Scholar 

  3. Bertram, W.: Differential geometry, Lie groups and symmetric spaces over general base fields and rings. Mem. Am. Math. Soc. 192(900), x+202 (2008)

  4. Bloemen I., Thas J.A., Van Maldeghem H.: Elation generalized quadrangles of order (p,t), p prime, are classical. J. Stat. Plan. Inference 56, 49–55 (1996)

    Article  MATH  Google Scholar 

  5. Boekholt S., Stroppel M.: Independence of axioms for fourgonal families. J. Geom. 72, 37–46 (2001)

    Article  MATH  MathSciNet  Google Scholar 

  6. Bruen A., Fisher J.C.: Spreads which are not dual spreads. Can. Math. Bull. 12, 801–803 (1969)

    MATH  MathSciNet  Google Scholar 

  7. Buchanan T.: Ovale und Kegelschnitte in der komplexen projektiven Ebene. Math. Phys. Semesterber 26, 244–260 (1979)

    MATH  MathSciNet  Google Scholar 

  8. Dembowski P.: Finite Geometries. Springer, Berlin (1968)

    MATH  Google Scholar 

  9. Frohardt D.: Groups which produce generalized quadrangles. J. Comb. Theory Ser. A 48, 139–145 (1988)

    Article  MathSciNet  Google Scholar 

  10. Glynn D.G.: A condition for the existence of ovals in PG(2, q), q even. Geom. Dedicata 32, 247–252 (1989)

    Article  MATH  MathSciNet  Google Scholar 

  11. Gorenstein D.: Finite Groups. Harper & Row, New York (1968)

    MATH  Google Scholar 

  12. Grundhöfer T., Stroppel M.: Automorphisms of Verardi groups: small upper triangular matrices over rings. Beitr. Algebra Geom. 49, 1–31 (2008)

    MATH  Google Scholar 

  13. Hughes D.R., Piper F.C.: Projective Planes. Springer, New York (1973)

    MATH  Google Scholar 

  14. Huppert B.: Endliche Gruppen. I. Springer, Berlin (1967)

    MATH  Google Scholar 

  15. Joswig, M.: Translationsvierecke. Ph.D. thesis, Universität Tübingen (1994)

  16. Joswig M.: Translation generalized quadrangles. Arch. Math. (Basel) 67, 253–264 (1996)

    MATH  MathSciNet  Google Scholar 

  17. Joswig M.: Pseudo-ovals, elation Laguerre planes, and translation generalized quadrangles. Beitr. Algebra Geom. 40, 141–152 (1999)

    MATH  MathSciNet  Google Scholar 

  18. Joswig M.: Compact connected translation generalized quadrangles. Results Math. 38, 72–87 (2000)

    MATH  MathSciNet  Google Scholar 

  19. Kantor W.M.: Generalized quadrangles associated with G 2(q). J. Comb. Theory Ser. A 29, 212–219 (1980)

    Article  MATH  MathSciNet  Google Scholar 

  20. Knarr N.: Polar spaces, BLT-sets and generalized quadrangles. Adv. Geom. 8, 139–152 (2008)

    Article  MATH  MathSciNet  Google Scholar 

  21. Lang S.: Algebra, 3rd edn. Springer, New York (2002)

    MATH  Google Scholar 

  22. Löwe S.: Fourgonal extensions. Geom. Dedicata 69, 67–81 (1998)

    Article  MATH  MathSciNet  Google Scholar 

  23. Löwen R.: Topological pseudo-ovals, elation Laguerre planes, and elation generalized quadrangles. Math. Z. 216, 347–369 (1994)

    Article  MATH  MathSciNet  Google Scholar 

  24. Mazurkiewicz S.: O pewnej mnogości płaskiej, która ma z każḑa prosţa dwa, i tylko dwa punkty wspólne. Comptes rendues des séances de la Société des Sciences de Varsovie, Classe II 4, 382–384 (1914)

    Google Scholar 

  25. Mazurkiewicz, S.: Sur un ensemble plan qui a avec chaque droite deux et seulment deux points communs. In: Travaux de topologie et ses applications, pp. 46–47. Państwowe Wydawnictwo Naukowe-Éditions Scientifiques de Pologne, Warszawa (1969)

  26. Payne S.E., Thas J.A.: Finite Generalized Quadrangles. Pitman, Boston (1984)

    MATH  Google Scholar 

  27. Pralle H.: Affine generalized quadrangles—an axiomatization. Geom. Dedicata 84, 1–23 (2001)

    Article  MATH  MathSciNet  Google Scholar 

  28. Rosehr N.: Topological affine quadrangles. Innov. Incidence Geom. 1, 143–169 (2005)

    MATH  MathSciNet  Google Scholar 

  29. Segre B.: Ovals in a finite projective plane. Can. J. Math. 7, 414–416 (1955)

    MATH  MathSciNet  Google Scholar 

  30. Steinke G.F.: Semiclassical 4-dimensional Laguerre planes. Forum Math. 2, 233–247 (1990)

    Article  MATH  MathSciNet  Google Scholar 

  31. Steinke G.F.: 4-dimensional elation Laguerre planes admitting non-solvable automorphism groups. Monatsh. Math. 136, 327–354 (2002)

    Article  MATH  MathSciNet  Google Scholar 

  32. Stroppel B.: Point-affine quadrangles. Note Mat. 20, 21–31 (2000/01)

    MathSciNet  Google Scholar 

  33. Stroppel M.: Compact three-dimensional elation quadrangles. Geom. Dedicata 83, 149–167 (2000)

    Article  MATH  MathSciNet  Google Scholar 

  34. Stroppel, M.: Polarities of symplectic quadrangles. Bull. Belg. Math. Soc. Simon Stevin 10, 437–449 (2003). Corrigenda: Bull. Belg. Math. Soc. Simon Stevin 11, 635 (2004)

  35. Stroppel M.: An affine proof of uniqueness for the smallest generalized quadrangles, including the determination of their automorphism groups. Note Mat. 27, 153–169 (2007)

    MATH  MathSciNet  Google Scholar 

  36. Thas K.: Solution of a question of Knarr. Proc. Am. Math. Soc. 136, 1409–1418 (2008)

    Article  MATH  MathSciNet  Google Scholar 

  37. Van Maldeghem H.: Generalized Polygons. Birkhäuser, Basel (1998)

    MATH  Google Scholar 

  38. Varadarajan V.S.: Lie Groups, Lie Algebras, and their Representations. Springer, New York (1984)

    MATH  Google Scholar 

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Correspondence to Markus Stroppel.

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Knarr, N., Rothmund, A. & Stroppel, M. Linearly small elation quadrangles. J. Geom. 95, 49–67 (2009). https://doi.org/10.1007/s00022-009-0017-3

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