This approach to clustering stresses the use of multivariate plots that allow the user, for example, to "fly through hyperspace," observing his data. In addition, multivariate histograms, scatter plots, link -node plots, waveform plots, and others can be dynamically controlled from the console to provide a unique visual insight into data structure, which cannot be obtained from conventional off...

We study the infimum of the Hausdorff and Vietoris topologies on the hyperspace of a metric space. We show that this topology coincides with the supremum of the upper Hausdorff and lower Vietoris topologies if and only if the underlying metric space is either totally bounded or is a UC space.

On the evening of the first day of the session the members present dined together at the Avenue House and a very enjoyable hour was spent. The next meeting of the Section will take place during the spring of the current year, of which due notice will be given. THERE is a region of mathematical thought which might be called the fairyland of geometry. The geometer here disports himself in a way w...