Tomoko Osawa

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Let L 2 = L 2 (D, r dr dθ/π) be the Lebesgue space on the open unit disc and let L 2 a = L 2 ∩ Ᏼol(D) be the Bergman space. Let P be the orthogonal projection of L 2 onto L 2 a and let Q be the orthogonal projection onto ¯ L 2 a,0 = {g ∈ L 2 ; ¯ g ∈ L 2 a , g(0) = 0}. Then I − P ≥ Q. The big Hankel operator and the small Hankel operator on L 2 a are defined(More)
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