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Published in 2017 at "Analysis and Mathematical Physics"
DOI: 10.1007/s13324-017-0193-5
Abstract: The determination of a finite Blaschke product from its critical points is a well-known problem with interrelations to several other topics. Though existence and uniqueness of solutions are established for long, we present new aspects…
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Keywords:
moment;
prescribed critical;
finite blaschke;
blaschke products ... See more keywords
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Published in 2017 at "Journal of Mathematical Analysis and Applications"
DOI: 10.1016/j.jmaa.2016.01.067
Abstract: Abstract We provide a new proof of a theorem of Fujimura characterizing Blaschke products of degree-4 that are compositions of two degree-2 Blaschke products, connect this result to the numerical ranges of certain operators, and…
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Keywords:
blaschke;
compositions finite;
ellipses compositions;
finite blaschke ... See more keywords
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Published in 2017 at "Journal of Mathematical Analysis and Applications"
DOI: 10.1016/j.jmaa.2016.10.035
Abstract: Abstract Let Γ = def { ( z + w , z w ) : | z | ≤ 1 , | w | ≤ 1 } ⊂ C 2 . A Γ-inner function is…
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Keywords:
rational inner;
inner;
inner function;
finite blaschke ... See more keywords
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Published in 2022 at "Journal of Mathematical Analysis and Applications"
DOI: 10.1016/j.jmaa.2022.126184
Abstract: This paper deals with representing in concrete fashion those Hilbert spaces that are vector subspaces of the Hardy spacesH(D) (1 ≤ p ≤ ∞) that remain invariant under the action of coordinate wise multiplication by…
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Keywords:
blaschke factors;
finite blaschke;
tuple;
invariant action ... See more keywords