33 citations · 85 across the 28 of their papers we have counts for
4 papers · 1 filter
Constrained -approximation by polynomials on subsets of the circle
L Baratchart, Juliette Leblond, Fabien Seyfert
We study best approximation to a given function, in the least square sense on a subset of the unit circle, by polynomials of given degree which are pointwise bounded on the complem…
Dirichlet/Neumann problems and Hardy classes for the planar conductivity equation
Laurent Baratchart, Yannick Fischer, Juliette Leblond
We study Hardy spaces of the conjugate Beltrami equation over Dini-smooth finitely connected domains, for real contractive $ν\in W^{1,r…
Constrained extremal problems in the Hardy space H2 and Carleman's formulas
Laurent Baratchart, Juliette Leblond, Fabien Seyfert
We study some approximation problems on a strict subset of the circle by analytic functions of the Hardy space H2 of the unit disk (in C), whose modulus satisfy a pointwise constra…
Analytic approximation of matrix functions in
L. Baratchart, F. L. Nazarov, V. V. Peller
We consider the problem of approximation of matrix functions of class on the unit circle by matrix functions analytic in the unit disk in the norm of , $2\le p<\be$. For…