A Variation on the Method of Cartier and
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Ethan Lewis
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Article
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1994
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Elsevier Science
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English
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A new technique for discovering and proving combinatorial identities is introduced. A bridgework showing the connection between this technique and covering systems of congruences is developed. New bijective proofs of the Vandermonde and Saalschuitz identities are given and other 'discovered' identit