Andreas-Stephan ELSENHANS a and Jörg JAHNEL a a Universität Göttingen, Mathematisches Institut, Bunsenstraße 3–5, D-37073 Göttingen, Germany 1 Abstract. We construct explicit examples of K3 surfaces over Q which are of degree 2 and the geometric Picard rank of which is equal to 1. We construct, particularly, examples in the form w2 = det M where M is a symmetric (3× 3)-matrix of ternary quadrat...

We construct a two-level weighted TQFT whose structure coefficents are equivariant intersection numbers on moduli spaces of admissible covers. Such a structure is parallel (and strictly related) to the local GromovWitten theory of curves in [BP04]. We compute explicitly the theory using techniques of localization on moduli spaces of admissible covers of a parametrized P. The Frobenius Algebras ...

The aim was to determine the rotational torque occurring at the shoe-natural grass interface during golf swing performance with different clubs, and to determine the influence of handicap and golf shoe design. Twenty-four golfers (8 low 0-7; 8 medium 8-14; and 8 high 15+) performed 5 shots with a driver, 3-iron and 7-iron when 3 shoes were worn: a modern 8 mm metal 7-spike shoe, an alternative ...

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A widely accepted method to specify (possibly infinite) behaviour is to define it as the solution, in some process algebra, of a recursive specification, i.e., a system of recursive equations over the fundamental operations of the process algebra. The method only works if the recursive specification has a unique solution in the process algebra; it is well-known that guardedness is a sufficient ...

Flood protection is crucial for making socioeconomic policies due to the high losses of extreme floods. So far, synchronous occurrences flood events have not been deeply investigated. In this paper, multivariate analysis was implemented reveal interconnection between these floods in spatiotemporal resolution. The discharge measurements 46 gauges with a continuous daily time series 55 years were...