Steinke, G.F.van Maldeghem, H.2014-12-042014-12-042010Steinke, G.F., van Maldeghem, H. (2010) Generalized Quadrangles and Projective Axes of Symmetry. Beitraege zur Algebra und Geometrie, 51(1), pp. 191-207.0440-1298http://hdl.handle.net/10092/9994We investigate generalized quadrangles Γ that admit at least two projective axes of symmetry. We show that if there are three such axes incident with a common point x, then x is a translation point of Γ. In case that Γ is moreover a compact connected quadrangle with topological parameters (p, p), p 2 N, then ?? is a topological translation generalized quadrangle. We further investigate the case of two opposite projective axes of symmetry and obtain a characterization of the dual of the symplectic quadrangle over R or C among compact connected quadrangles with equal topological parameters.enJournal ArticleFields of Research::49 - Mathematical sciences::4904 - Pure mathematics::490402 - Algebraic and differential geometry