Approximating z in Hardy and Bergman norms
نویسنده
چکیده
We consider the problem of nding the best analytic approximation in Smirnov and Bergman norm to general monomials of the type znzm. We show that in the case of approximation to z in the annulus (and the disk) the best approximation is the same for all values of p. Moreover, the best approximations to z in Smirnov and Bergman spaces characterize disks and annuli.
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تاریخ انتشار 2006