were disbanded because of hooliganism. They have been restarted in this century and take place on the first weekend in May. The games consisted of various contests at single stick (backsword), wrestling, running, jingling, Morris dancing, greyhound coursing and horse racing. It is said that Shakespeare, whose aunt Joan Arden lived at Barton on the Heath, attended the games and included scenes f...

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Due to network effects and switching costs, platform providers often become entrenched. To dislodge them, entrants generally must offer revolutionary products. We explore a second path to platform leadership change that does not rely on Schumpeterian creative destruction: platform envelopment. By leveraging common components and shared user relationships, one platform provider can move into ano...

The aim of the geometric quantization program is to describe a quantization procedure in terms of natural geometric structures. To date, this program has succeeded in unifying various older methods of quantizing finite dimensional physical systems. The generalization to infinite-dimensional systems (for example, field theories) remains an active area of research. As such, we will restrict our a...

We are concerned with the design and analysis of a multigrid algorithm for H(div; Ω)–elliptic linear variational problems. The discretization is based on H(div; Ω)–conforming Raviart–Thomas elements. A thorough examination of the relevant bilinear form reveals that a separate treatment of vector fields in the kernel of the divergence operator and its complement is paramount. We exploit the repr...

Israel Cidon received the B.Sc (summa cum laude) and the D.Sc. degrees from the Technion -Israel Institute of Techno logy, Haifa, Israel, in 1980 and 1984, respectively, both in electrical engineering. From 1977 to 1980 he was a consulting Research and Development Engineer involved in the design of rnicroprocessor-based equipment. From 1980 to 1984 he was a Teaching Assistant and a Teaching Ins...

We prove that the bounded complex of an affine oriented matroid is pure and collapsible. We also generalize Zaslavsky’s Central Decomposition Theorem for hyperplane arrangements to affine oriented matroids.