• Corpus ID: 238744252

Functions with small and large spectra as (non)extreme points in subspaces of $H^\infty$

@inproceedings{Dyakonov2021FunctionsWS,
  title={Functions with small and large spectra as (non)extreme points in subspaces of \$H^\infty\$},
  author={Konstantin M. Dyakonov},
  year={2021}
}
Given a subset Λ of Z+ := {0, 1, 2, . . .}, let H ∞(Λ) denote the space of bounded analytic functions f on the unit disk whose coefficients f̂(k) vanish for k / ∈ Λ. Assuming that either Λ or Z+ \ Λ is finite, we determine the extreme points of the unit ball in H∞(Λ). 

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