The Sidon constant for homogeneous polynomials

Details The Sidon constant for homogeneous polynomials The Sidon constant for homogeneous polynomials

2009-03-08

arxiv.org/abs/0903.1455v1

Mathematics

Complex Variables

Scientific paper

The Sidon constant for the index set of nonzero m-homogeneous polynomials P in n complex variables is the supremum of the ratio between the l^1 norm of the coefficients of P and the supremum norm of P in D^n. We present an estimate which gives the right order of magnitude for this constant, modulo a factor depending exponentially on m. We use this result to show that the Bohr radius for the polydisc D^n is bounded from below by a constant times sqrt((log n)/n).

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