Generating and characterizing the perfec
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L.S. Chandran; L. Ibarra; F. Ruskey; J. Sawada
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Article
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2003
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Elsevier Science
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English
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We develop a constant time transposition "oracle" for the set of perfect elimination orderings of chordal graphs. Using this oracle, we can generate a Gray code of all perfect elimination orderings in constant amortized time using known results about antimatroids. Using clique trees, we show how the