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CACM
2000
15 years 5 months ago
2000
142
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COMBINATORICS
2000
15 years 5 months ago
2000
Let n be the fraction of structures of size" n which are connected"; e.g., a the fraction of labeled or unlabeled n-vertex graphshavingone component, b the fraction of p...
128
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COMBINATORICS
2000
15 years 5 months ago
2000
Abstract. We introduce color-signed permutations to obtain a very explicit combinatorial interpretation of the q-Eulerian identities of Brenti and some generalizations. In particul...