Carry Propagation in Signed Digit Representations
C. Heuberger, and H. Prodinger

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The performance of coauthor Clemens H was exceptional. First, he described the sequences of interest in the q,d case by sort of a regular expression. Soon, we realized that we had to switch to automata. The decomposition B+R that looks very natural now cost us actually a lot of time. The Maple skills of Clemens are amazing, perhaps in the same class as his alter ego Bruno Salvy.,

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