Abstract:Bell's theorem determines the number of representations of a positive integer in terms of the ternary quadratic forms 2 2 2 x by cz + + with { } , 1, 2, 4, 8 b c ∈. This number depends only on the number of representations of an integer as a sum of three squares. We present a modern elementary proof of Bell's theorem that is based on three standard Ramanujan theta function identities and a set of five so-called three-square identities by Hurwitz. We use Bell's theorem and a slight extension of it to find expli… Show more
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