A lower bound in Nehari’s theorem on the polydisc
نویسندگان
چکیده
منابع مشابه
A Lower Bound in Nehari’s Theorem on the Polydisc
By theorems of Ferguson and Lacey (d = 2) and Lacey and Terwilleger (d > 2), Nehari’s theorem is known to hold on the polydisc D for d > 1, i.e., if Hψ is a bounded Hankel form on H(D) with analytic symbol ψ, then there is a function φ in L∞(Td) such that ψ is the Riesz projection of φ. A method proposed in Helson’s last paper is used to show that the constant Cd in the estimate ‖φ‖∞ ≤ Cd‖Hψ‖ g...
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ژورنال
عنوان ژورنال: Journal d'Analyse Mathématique
سال: 2012
ISSN: 0021-7670,1565-8538
DOI: 10.1007/s11854-012-0038-y