We give two quick elementary proofs of a well-known additive formula for the factorial which arises from the calculus of finite differences. The first one is purely analytical, the second one purely combinatorial.
Two very short proofs of a combinatorial identity
BARILE, Margherita
2005-01-01
Abstract
We give two quick elementary proofs of a well-known additive formula for the factorial which arises from the calculus of finite differences. The first one is purely analytical, the second one purely combinatorial.File in questo prodotto:
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