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Artikelaktionen

Publications

Journal articles

  1. Ralf Gramlich, Hendrik Van Maldeghem
    Epimorphisms of generalized polygons. I: Geometrical characterizations
    Des. Codes Cryptography 21 (2000)
    99 - 111
  2. Peter Beelen, Ralf Gramlich
    On Anti-Automorphisms of the first kind in division ring
    Proc. Amer. Math. Soc. 130 (2002)
    3745 - 3746
  3. Ralf Gramlich, Corneliu Hoffman, Sergey Shpectorov
    A Phan-type theorem for Sp(2n,q)
    J. Algebra 264 (2003)
    358 - 384.
  4. Ralf Gramlich
    Line-hyperline pairs of projective spaces and fundamental subgroups of linear groups
    Adv. Geom. 4 (2004)
    83 - 103
  5. Ralf Gramlich
    On the hyperbolic symplectic geometry
    J. Combin. Theory Ser. A 105 (2004)
    97 - 110
  6. Ralf Gramlich
    Weak Phan Systems of Type C_n
    J. Algebra 280 (2004)
    1 - 19.
  7. Ralf Gramlich, Corneliu Hoffman, Werner Nickel, Sergey Shpectorov
    Even dimensional orthogonal groups as amalgams of unitary groups
    J. Algebra 284 (2005)
    141 - 173.
  8. Arjeh Cohen, Hans Cuypers, Ralf Gramlich
    Local recognition of non-incident point-hyperplane graphs
    Combinatorica 25 (2005)
    271 - 296.
  9. Ralf Gramlich
    Defining amalgams of compact Lie groups
    J. Lie Theory 16 (2006)
    1 - 18.
  10. Kristina Altmann, Ralf Gramlich
    On the geometry on the nondegenerate subspaces of orthogonal space
    Bull. Math. Soc. Belg. Simon Stevin 13 (2006)
    167 - 179.
  11. Ralf Gramlich, Hendrik Van Maldeghem
    Intransitive geometries
    Proc. Lond. Math. Soc. 93 (2006)
    666 - 692.
  12. Ralf Gramlich, Max Horn, Werner Nickel
    The complete Phan-type theorem for Sp(2n,q)
    J. Group Theory 9 (2006)
    603 - 626.
  13. Ralf Gramlich, Georg Hofmann, Karl-Hermann Neeb
    Semi-edges, reflections, and Coxeter groups
    Trans. Amer. Math. Soc. 359 (2007)
    3647 - 3668.
  14. Curtis Bennett, Ralf Gramlich, Corneliu Hoffman, Sergey Shpectorov
    Odd-dimensional orthogonal groups as amalgams of unitary groups. Part 1: general simple connectedness
    J. Algebra 312 (2007)
    426 - 444.
  15. Ralf Gramlich, Max Horn, Werner Nickel
    Odd-dimensional orthogonal groups as amalgams of unitary groups. Part 2: machine computations
    J. Algebra 316 (2007)
    591 - 607.
  16. Ralf Gramlich, Max Horn, Antonio Pasini, Hendrik Van Maldeghem
    Intransitive geometries and fused amalgams
    J. Group Theory 11 (2008)
    443 - 464.
  17. Alice Devillers, Ralf Gramlich, Bernhard Mühlherr
    The sphericity of the complex of nondegenerate subspaces
    J. Lond. Math. Soc. 79 (2009)
    684 - 700.
  18. Ralf Gramlich, Andreas Mars
    Isomorphisms of unitary forms of Kac–Moody groups over finite fields
    J. Algebra 322 (2009)
    554 - 561.
  19. Tom De Medts, Ralf Gramlich, Max Horn
    Iwasawa decompositions of split Kac–Moody groups
    J. Lie Theory 19 (2009)
    311 - 337.
  20. Arjeh Cohen, Hans Cuypers, Ralf Gramlich
    Opposition in triality
    J. Group Theory 12 (2009)
    491 - 510.
  21. Ralf Gramlich
    Developments in finite Phan theory
    Innov. Incidence Geom. 9 (2009)
    123 - 175.
  22. Kristina Altmann, Ralf Gramlich
    Local recognition of the line graph of an anisotropic vector space
    Adv. Geom. 10 (2010)
    77 - 91.
  23. Helge Glöckner, Ralf Gramlich, Tobias Hartnick
    Final Group topologies, Kac-Moody groups and Pontryagin duality
    Israel J. Math. 177 (2010)
    49 - 101.
  24. Kristina Altmann, Ralf Gramlich
    On the hyperbolic unitary geometry
    J. Algebr. Comb. 31 (2010)
    547 - 583.
  25. Ralf Gramlich, Jonathan I. Hall, Armin Straub
    The local recognition of reflection graphs of spherical Coxeter groups
    J. Algebr. Comb. 32 (2010)
    1 - 14.
  26. Torsten Kurth, Ralf Gramlich, Linus Kramer
    The real quadrangle of type E_6
    Adv. Geom. 10 (2010)
    505 - 526.
  27. Ralf Gramlich, Max Horn, Bernhard Mühlherr
    Abstract involutions of algebraic groups and of Kac-Moody groups
    J. Group Theory 14 (2011)
    213 – 249.
  28. Ralf Köhl, Stefan Witzel
    The sphericity of the Phan geometries of type B_n and C_n and the Phan-type theorem of type F_4
    Trans. Amer. Math. Soc., 365 (2013)
    1577 - 1602
  29. Kai-Uwe Bux, Ralf Köhl, Stefan Witzel
    Higher finiteness properties of reductive arithmetic groups in positive characteristic: the rank theorem
    Annals of Math 177 (2013)
    311 - 366
  30. Ralf Köhl, Katja Möser, Hendrik Van Maldeghem
    The endomorphism type of certain bipartite graphs and a characterization of projective planes
    Graphs and Combinatorics 29 (2013)
    253 - 257
  31. Tobias Hartnick, Ralf Köhl, Andreas Mars
    On topological twin buildings and topological split Kac-Moody groups
    Innov. Incidence Geom. 13 (2013)
    1 - 71
  32. Ralf Köhl, Bernhard Mühlherr, Koen Struyve
    Quotients of trees for arithmetic subgroups of PGL2 over a rational function field
    J. Group Theory 18 (2015)
    61 - 74
  33. Tobias Hartnick, Ralf Köhl
    Two-spherical topological Kac-Moody groups are Kazhdan
    J. Group Theory 18 (2015)
    649 - 654
  34. Guntram Hainke, Ralf Köhl, Paul Levy
    Generalized spin representations
    With an appendix by Max Horn and Ralf Köhl
    Münster J. of Math. 8 (2015)
    181 - 210
  35. Rony Bitan, Ralf Köhl
    A building-theoretic approach to relative Tamagawa numbers of semisimple groups over global function fields
    Funct. Approx. Comment. Math. 53 (2015)
    215 - 247
  36. Dieter Degrijse, Ralf Köhl, Nansen Petrosyan
    Classifying spaces with virtually cyclic stabilizers for linear groups
    Transform. Groups 20 (2015)
    381 - 394
  37. Amir Farahmand Parsa, Max Horn, Ralf Köhl
    Isomorphisms and rigidity of arithmetic Kac-Moody groups
    J. Lie Theory 26 (2016), 1079 - 1105
  38. David Ghatei, Max Horn, Ralf Köhl, Sebastian Weiß
    Spin covers of maximal compact subgroups of Kac-Moody groups and spin-extended Weyl groups
    J. Group Theory, to appear

Contributions to conference proceedings

  1. Ralf Gramlich, Hendrik Van Maldeghem
    Epimorphisms of generalized polygons. II: Some existence and non-existence results
    in: Finite Geometries, Proceedings of the fourth Isle of Thorns conference (Blokhuis et al., eds.), Kluwer, Dordrecht 2001
    177 - 200.
  2. Curtis Bennett, Ralf Gramlich, Corneliu Hoffman, Sergey Shpectorov
    Curtis-Phan-Tits theory
    in: Groups, Combinatorics and Geometry, Proceedings of the Durham Conference on Groups and Geometry 2001 (Ivanov et al., eds.), World Scientific, River Edge 2003
    13 - 29.
  3. Ralf Gramlich
    Simple connectedness of the geometry of nondegenerate subspaces of a symplectic space over arbitrary fields
    in: Finite Groups 2003, Proceedings of the conference in honor of John Thompson (Ho et al., eds.), Walter De Gruyter, Berlin 2004
    111 - 116.
  4. Ralf Gramlich, Bernhard Mühlherr
    Lattices from involutions of Kac-Moody groups
    Oberwolfach reports 5 (2008)
    139-140.
  5. Ralf Gramlich
    On the geometry of global function fields, the Riemann-Roch theorem, and finiteness properties of S-arithmetic groups
    In: Buildings, finite geometries und groups, (edited by N.S.N.\ Sastry), Springer, Berlin, 2012, 49 - 80

Manuscripts not intended for publication

Books