Francis Cheong Yiu Fung

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In the endeavour to build an expert system called X B A K using Personal Consultant Plus for the diagnosis of sophisticated equipment used in microchip manufacturing, a rule-based machine diagnostic expert system architecture was developed. The approach, features and technical implementation of this application-independent problem-solving structure are(More)
We describe the irreducible components of Springer fibers for hook and two-row nilpotent elements of gl n (C) as iterated bundles of flag manifolds and Grassmannians. We then relate the topology (in particular, the intersection homology Poincaré polynomials) of the intersections of these components with the inner products of the Kazhdan-Lusztig basis(More)
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