Building upon the ideas first exposed by Theil and Finizza (1971) and Fuchs (1975), this paper presents an additively decomposable segregation index based on the entropy concept used in information theory. For any pair of classification variables in a given year, the index is decomposed into a between-group and a withingroup term. To analyze intertemporal changes in gender segregation for a giv...

Rozansky and Witten proposed in 1996 a family of new three-dimensional topological quantum field theories, indexed by compact (or asymptotically flat) hyperkähler manifolds. As a byproduct they proved that hyperkähler manifolds also give rise to Vassiliev weight systems. These may be thought of as invariants of hyperkähler manifolds, so the theory is of interest to geometers as well as to low-d...

We propose a new framework for Conley index theory. The main feature of our approach is that we do not use the notion pairs. introduce, instead, notions compactifiable subsets and neighbourhoods, formulate prove basic results in theory using these notions. treat both discrete time case continuous case.

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