Function spaces related to the Dirichlet space
نویسندگان
چکیده
H ·H := ̆ h = fg : f, g ∈ H ̄ = H ←↩ H is the product space of H2, by inner/outer factorization and Cauchy-Schwarz inequality. It is interesting, then, to find the dual space of H1. C. Fefferman [7] proved that, under the H2 paring (with some care), (H2 ·H2)∗ = (H1)∗ = BMO∩H(D) is the space of the analytic functions with bounded mean oscillation. The definition of BMO, born out of a problem in elasticity theory [9], in our context is as follows. A complex valued function b on the torus T has bounded mean oscillation if there is a positive constant C such that
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ورودعنوان ژورنال:
- J. London Math. Society
دوره 83 شماره
صفحات -
تاریخ انتشار 2011