The MAGMA algebra system I: the user language
Journal of Symbolic Computation - Special issue on computational algebra and number theory: proceedings of the first MAGMA conference
Generalized Quadrangles with an Abelian Singer Group
Designs, Codes and Cryptography
A generalized quadrangle with an automorphism group acting regularly on the points
European Journal of Combinatorics
Generalized quadrangles admitting a sharply transitive Heisenberg group
Designs, Codes and Cryptography
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We study the point regular groups of automorphisms of some of the known generalised quadrangles. In particular we determine all point regular groups of automorphisms of the thick classical generalised quadrangles. We also construct point regular groups of automorphisms of the generalised quadrangle of order (q-1,q+1) obtained by Payne derivation from the classical symplectic quadrangle W(3,q). For q=p^f with f=2 we obtain at least two nonisomorphic groups when p=5 and at least three nonisomorphic groups when p=2 or 3. Our groups include nonabelian 2-groups, groups of exponent 9 and nonspecial p-groups. We also enumerate all point regular groups of automorphisms of some small generalised quadrangles.