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A new proof of a theorem of Cassels and Pfister


Author: Larry J. Gerstein
Journal: Proc. Amer. Math. Soc. 41 (1973), 327-328
MSC: Primary 12E05; Secondary 10C05
DOI: https://doi.org/10.1090/S0002-9939-1973-0319952-7
MathSciNet review: 0319952
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Abstract: This note uses the theory of quadratic forms over Dedekind domains to give a new proof of a theorem of Cassels and Pfister on the representation of polynomials in terms of squares of rational functions.


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DOI: https://doi.org/10.1090/S0002-9939-1973-0319952-7
Article copyright: © Copyright 1973 American Mathematical Society

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