Fredholm Eigenvalues and Quasiconformal Geometry of Polygons

An important open problem in geometric complex analysis is to establish algorithms for the explicit determination of the basic curvilinear and analytic functionals intrinsically connected with conformal and quasiconformal maps, such as their Teichmüller and Grunsky norms, Fredholm eigenvalues, and t...

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Vydáno v:Journal of mathematical sciences (New York, N.Y.) Ročník 252; číslo 4; s. 472 - 501
Hlavní autor: Krushkal, Samuel L.
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York Springer US 01.01.2021
Springer
Springer Nature B.V
Témata:
Algorithms
Eigenvalues
Mathematical analysis
Mathematics
Mathematics and Statistics
Norms
Polygons
Potential theory
convex polygon
Beltrami coefficient
quasiconformal reflection
universal Teichmüller space
Fredholm eigenvalues
Grunsky inequalities
univalent function
ISSN:1072-3374, 1573-8795
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Popis
Shrnutí:An important open problem in geometric complex analysis is to establish algorithms for the explicit determination of the basic curvilinear and analytic functionals intrinsically connected with conformal and quasiconformal maps, such as their Teichmüller and Grunsky norms, Fredholm eigenvalues, and the quasireflection coefficient. This is important also for the potential theory but has not been solved even for convex polygons. This case has intrinsic interest in view of the connection of polygons with the geometry of the universal Teichmüller space and approximation theory. This survey extends our previous survey of 2005 and presents the new approaches and recent essential progress in this field of geometric complex analysis and potential theory, having various important applications. Another new topic concerns quasireflections across finite collections of quasiintervals (to which the notion of Fredholm eigenvalues also can be extended).
Bibliografie:ObjectType-Article-1
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ISSN:1072-3374
1573-8795
DOI:10.1007/s10958-020-05175-4