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A class of fibered loops related to general hyperbolic planes

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Abstract

In this paper we introduce a class of left conjugacy closed loops which are also fibered in subsemigroups. We inspect the possibility to extend the semigroups of the fibration to commutative subgroups. Then we construct an example of such loops arising from a suitable selected subset of the set of all limit rotations of the hyperbolic plane over an euclidean field.

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References

  1. Gabrieli E., Karzel H.: Point-reflection geometries, geometric K-loops and unitary geometries. Results Math. 32, 66–72 (1997)

    Article  MATH  MathSciNet  Google Scholar 

  2. Giuzzi L., Karzel H.: Co-Minkowski spaces, their reflection structure and K-loops. Discrete Math. 255(1-3), 161–179 (2002)

    Article  MATH  MathSciNet  Google Scholar 

  3. Hotje, H.: Fibered incidence loops by neardomains. In: Saad, G., Thomsen, M., et al. (eds.) Nearrings, Nearfields and K-loops, pp. 283–286. Kluwer, Dordrecht (1997)

  4. Karzel H.: Loops related to geometric structures. Quasigroups Relat. Syst. 15, 47–76 (2007)

    MATH  MathSciNet  Google Scholar 

  5. Karzel, H., Kist, G.P.: Kinematic algebras and their geometries. In: Kaya, R., et al. (eds.) Rings and Geometries. NATO ASI series-C, vol. 160, pp. 437–509 (1985)

  6. Karzel H., Konrad A.: Reflection groups and K-loops. J. Geom. 52, 120–129 (1995)

    Article  MATH  MathSciNet  Google Scholar 

  7. Karzel H., Marchi M.: Vectorspacelike representation of absolute planes. J. Geom. 86, 81–97 (2006)

    Article  MATH  MathSciNet  Google Scholar 

  8. Karzel H., Marchi M.: Introduction of measures for segments and angles in a general absolute plane. Discrete Math. 308, 220–230 (2008)

    Article  MATH  MathSciNet  Google Scholar 

  9. Karzel H., Marchi M., Pianta S.: The defect in an invariant reflection structure. J. Geom. 99, 74–80 (2010)

    Article  MathSciNet  Google Scholar 

  10. Karzel H., Pianta S.: Left loops, bipartite graphs with parallelism and bipartite involution sets. Abh. Math. Semin. Univ. Hamburg 75, 203–214 (2005)

    Article  MATH  MathSciNet  Google Scholar 

  11. Karzel H., Pianta S., Zizioli E.: K-loops derived from Frobenius groups. Discrete Math. 255(1–3), 225–234 (2002)

    Article  MATH  MathSciNet  Google Scholar 

  12. Karzel H., Sörensen K., Windelberg D.: Einführung in die Geometrie. Vandenhoeck & Ruprecht, Göttingen (1973)

    MATH  Google Scholar 

  13. Karzel H., Wefelscheid H.: A geometric construction of the K-loop of a hyperbolic space. Geometriae Dedicata 58, 227–236 (1995)

    Article  MATH  MathSciNet  Google Scholar 

  14. Kiechle, H.: Theory of K-loops. Lecture Notes in Mathematics. Springer, Berlin (2002)

  15. Kolb E., Kreuzer A.: Geometry of kinematic loops. Abh. Math. Semin. Univ. Hamburg 65, 189–197 (1995)

    Article  MATH  MathSciNet  Google Scholar 

  16. Korchmaros G., Marchi M.: Loops with partitions and Andre’ structures. Istit. Lombardo Accad. Sci. Lett. Rend. A 113, 329–340 (1981)

    MathSciNet  Google Scholar 

  17. Nagy P.T., Strambach K.: Loops as invariant sections of groups and their geometry. Can. J. Math. 40, 1027–1056 (1994)

    Article  MathSciNet  Google Scholar 

  18. Nagy P.T., Strambach K.: Loops in group theory and Lie theory. de Gruyter Expositions in Mathematics, vol. 35. Walter de Gruyter and Co., Berlin (2002)

    Book  Google Scholar 

  19. Pasotti A., Zizioli E.: Incidence left loops derived from kinematic algebras. Results Math. 50, 125–139 (2007)

    Article  MathSciNet  Google Scholar 

  20. Zizioli E.: Fibered incidence loops and kinematic loops. J. Geom. 30(2), 144–156 (1987)

    Article  MATH  MathSciNet  Google Scholar 

  21. Zizioli E.: Semidirect product of loops and fibrations. Results Math. 51, 373–382 (2008)

    Article  MATH  MathSciNet  Google Scholar 

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Correspondence to Silvia Pianta.

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Karzel, H., Pianta, S. & Pasotti, S. A class of fibered loops related to general hyperbolic planes. Aequat. Math. 87, 31–42 (2014). https://doi.org/10.1007/s00010-012-0164-8

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  • DOI: https://doi.org/10.1007/s00010-012-0164-8

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