Abstract
The remarkable theorem of P. Belinskii is a deep underlying result in the variational calculus for quasiconformal maps. It is valid only for maps with small sufficiently regular Beltrami coefficients. We provide a global version of this theorem connected with the classical results on quasiconformal extensions of conformal maps and its new applications.
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M. Abate and G. Patrizio, “Isometries of the Teichmüller metric,” Ann. Scuola Super. Pisa Cl. Sci., 26(4), 437–452 (1998).
L. Ahlfors, “An extension of Schwarz’s lemma,” Trans. Amer. Math. Soc., 43, 359–364 (1938).
L. Ahlfors, “Finitely generated Kleinian groups,” Amer. J. Math., 86, 413–429 (1964).
L. Ahlfors, Lectures on Quasiconformal Mappings. Van Nostrand, Princeton (1966).
L. V. Ahlfors and G. Weill, “A uniqueness theorem for Beltrami equations,” Proc. Amer. Math. Soc., 13, 975–978 (1962).
J. Becker, “Löwnersche Differentialgleichung und Schlichtheitskriterien,” Math. Ann., 202, 321–335 (1973).
J. Becker, Conformal mappings with quasiconformal extensions. Aspects of Contemporary Complex Analysis, Proc. Confer. Durham 1979 (D.A. Brannan and J.G. Clunie, eds.). Academic Press, New York, pp. 37–77 (1980).
P. P. Belinskii, General Properties of Quasiconformal Mappings [in Russian]. Novosibirsk, Nauka (1974).
L. Bers, “A non-standard integral equation with applications to quasiconformal mappings,” Acta Math., 116, 113–134 (1966).
S. Dineen, The Schwarz Lemma. Clarendon Press, Oxford (1989).
C. J. Earle, On quasiconformal extensions of theBeurling-Ahlfors type. In: Contribution to Analysis, Academic Press, New York, 99–105 (1974).
C. J. Earle and J. J. Eells, “On the differential geometry of Teichm¨uller spaces,” J. Analyse Math., 19, 35–52 (1967).
C. J. Earle, I. Kra, and S. L. Krushkal, “Holomorphic motions and Teichmüller spaces,” Trans. Amer. Math. Soc., 944, 927–948 (1994).
F. P. Gardiner, N. Lakic, Quasiconformal Teichmüller Theory. Amer. Math. Soc., Providence, RI (2000).
H. Grunsky, “Koeffizientenbedingungen für schlicht abbildende meromorphe Funktionen,” Math. Z., 45, 29–61 (1939).
S. Kobayayshi, Hyperbolic Complex Spaces. Springer, New York (1998).
S. L. Krushkal, Quasiconformal Mappings and Riemann Surfaces. Wiley, New York (1979).
S. L. Krushkal, “Differential operators and univalent functions,” Complex Variables: Theory and Applications, 7, 107–127 (1986).
S. L. Krushkal, “Grunsky coefficient inequalities, Carathéodory metric and extremal quasiconformal mappings,” Comment. Math. Helv., 64, 650–660 (1989).
S. L. Krushkal, “Plurisubharmonic features of the Teichmüller metric,” Publications de l’Institut Mathématique-Beograd, Nouvelle série, 75(89), 119–138 (2004).
S. L. Krushkal, “Quasireflections, Fredholm eigenvalues and Finsler metrics,” Doklady Mathematics, 69, 221–224 (2004).
S. L. Krushkal, Variational principles in the theory of quasiconformal maps, Ch. 2. In: Handbook of Complex Analysis: Geometric Function Theory, Vol. 2, Elsevier Science (R. K¨uhnau, ed.), Amsterdam, pp. 31–98 (2005).
S. L. Krushkal, Quasiconformal extensions and reflections, Ch. 11. In: Handbook of Complex Analysis: Geometric Function Theory, Vol. II (R. Kühnau, ed.), Elsevier Science, Amsterdam, pp. 507–553 (2005).
S. L. Krushkal, “On shape of Teichmüller spaces,” Journal of Analysis, 22, 69–76 (2014).
S. L. Krushkal, “Strengthened Grunsky and Milin inequalities,” Contemp. Mathematics, 667, 159–179 (2016).
S. L. Krushkal, Curvelinear functionals of tangent abelian disks in universal Teichmüller space, submitted.
S. L. Krushkal and R. Kühnau, “Grunsky inequalities and quasiconformal extension,” Israel J. Math., 152, 49–59 (2006).
R. Kühnau, “Verzerrungssätze und Koeffizientenbedingungen vom Grunskyschen Typ für quasikonforme Abbildungen,” Math. Nachr., 48, 77–105 (1971).
R. Kühnau, “Quasikonforme Fortsetzbarkeit, Fredholmsche Eigenwerte und Grunskysche Koeffizientenbedingungen,” Ann. Acad. Sci. Fenn. Ser. AI. Math., 7, 383–391 (1982).
R. Kühnau, “Möglichst konforme Spiegelung an einer Jordankurve,” Jber. Deutsch. Math. Verein., 90, 90–109 (1988).
I. M. Milin, Univalent Functions and Orthonormal Systems. Transl. of Mathematical Monographs, vol. 49. Transl. of Odnolistnye funktcii i normirovannie systemy, Amer. Math. Soc., Providence, R.I. (1977).
D. Minda, “The strong form of Ahlfors’ lemma,” Rocky Mountain J. Math., 17, 457–461 (1987).
Chr. Pommerenke, Univalent Functions. Vandenhoeck & Ruprecht, Göttingen (1975).
Chr. Pommerenke, Boundary Behaviour of Conformal Maps. Springer-Verlag, Berlin (1992).
H. L. Royden, “The Ahlfors-Schwarz lemma: the case of equality,” J. Analyse Math., 46, 261–270 (1986).
M. Schiffer, “Fredholm eigenvalues and Grunsky matrices,” Ann. Polon. Math., 39, 149–164 (1981).
K. Strebel, “On the existence of extremal Teichmueller mappings,” J. Analyse Math., 30, 464–480 (1976).
I. N. Vekua, Generalized Analytic Functions [in Russian]. Fizmatgiz, Moscow (1959).
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Translated from Ukrains’kiĭ Matematychnyĭ Visnyk, Vol. 19, No. 2, pp. 176–201, April–June, 2022.
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Krushkal, S.L. Strengthened Belinskii theorem and its applications. J Math Sci 264, 396–414 (2022). https://doi.org/10.1007/s10958-022-06007-3
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DOI: https://doi.org/10.1007/s10958-022-06007-3