``Chu's 1303 identity implies Bombieri's 1990 inequality'' [Via an identity of Beauzamy and Degot] (appeared in the Amer. Math. Monthly, Nov. 1994).

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Added Sept. 24, 2017: Kai-Liang Lin just informed that the so-called Bombieri's inequality should be called Neuberger's inequality, as it was discovered, in 1974, by John M. Neuberger.
John M. Neuberger, "Norm of symmetric product compared with norm of tensor product", Linear and Multilinear Algebra, 1974, Vol. 2, pp. 115-121.

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