Abstract
We characterize commutative domainsR for which theR-module ofR-valued polynomials is generated by binomial coefficients. This turns out to be a special case of a more general result concerning commutative ringsR of zero characteristics in which fork=1,2,... and allx∈R the productx(x−1)·.·(x−k+1) is divisible byk! inR.
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Pólya, G.: Über ganzwertige ganze Funktionen. Rendiconti Circ. Mat. Palermo40, 1–16 (1915).
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The work of the second author has been sponsored by the KBN grant 2 1037 91 01
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Halter-Koch, F., Narkiewicz, W. Commutative rings and binomial coefficients. Monatshefte für Mathematik 114, 107–110 (1992). https://doi.org/10.1007/BF01535576
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DOI: https://doi.org/10.1007/BF01535576