A pseudo-hyperoval of a projective space PG(3n− 1, q), q even, is a set of q +2 subspaces of dimension n − 1 such that any three span the whole space. We prove that a pseudo-hyperoval with an irreducible transitive stabiliser is elementary. We then deduce from this result a classification of the thick generalised quadrangles Q that admit a point-primitive, line-transitive automorphism group wit...

The topological entropy of a braid is the infimum of the entropies of all homeomor-phisms of the disc which have a finite invariant set represented by the braid. When the isotopy class represented by the braid is pseudo-Anosov or is reducible with a pseudo-Anosov component, this entropy is positive. Fried and Kolev proved that the entropy is bounded below by the logarithm of the spectral radius...

The title compound, C(10)H(10)Cl(3)N(3), features a delocalized unsaturated N C N C N chain and strong intra-molecular N-H⋯N hydrogen bonding across the chelate ring and also intra-molecular N-H⋯Cl contacts to a CCl(3)-group Cl atom. The only inter-molecular contacts in the lattice are non-classical hydrogen bonds between methyl and CCl(3) groups. The pseudo-six-membered ring is distinctly non-...

The methodology to distinguish the patients showing considerable fluctuation of the whole blood concentration of cyclosporin A (CYA) was investigated from a viewpoint of laboratory test values. First, we retrospectively examined the CYA trough blood concentrations monitored continuously. The patients were classified into three groups by the fluctuation of CYA trough blood concentrations during ...

Abstract Given a Henselian valuation, we study its definability (with and without parameters) by examining conditions on the value group. We show that any valuation whose group is not closed in divisible hull definable language of rings, using one parameter. Thereby strengthen known results. Moreover, this case, parameter optimal sense cannot obtain parameters. To end, present construction meth...