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In analogy with the symmetric group, we define the vexillary elements in the hyperoctahedral group to be those for which the Stanley symmetric function is a single Schur Q-function. We show that the vexillary elements can be again determined by pattern avoidance conditions. These results can be extended to include the root systems of types A, B, C, and D.… (More)
MAY 23 1995 cie. Abstract Our main objective is to study the analogues of the stable Schubert polynomials G, H, for the classical Weyl groups Bn and Dn respectively. Using the nilCoxeter algebra for B, Fomin and Kirillov have shown that G, is a symmetric function and can be written as an integer combination of Schur P-functions. Using the Kraskiewicz… (More)
The digital circuit rewiring technique has been shown to be one of the most powerful logic transformation methods being able to further improve some already excellent results on many EDA problems. In this work a new hybrid rewiring approach that can enjoy advantages from both ATPG-based and graph-based rewiring is proposed. Our hybrid approach utilizes… (More)
A five-year study of file-system meta-data.