Abstract
We prove an inequality for the capacity of a condenser via a holomorphic function f, under a valency assumption on f, and we show that equality occurs if and only if f has finite constant valency. Also, we generalize a well known inequality for quasiregular mappings and we give a necessary condition for the case of equality.
Similar content being viewed by others
References
Dubinin, V.N.: A majorization principle for p-valent functions. Mat. Zametki 65(4), 533–541 (1999) (Russian), translation in Math. Notes 65(3–4), 447–453 (1999)
Dubinin, V.N.: On the preservation of conformal capacity under meromorphic functions. Analytical theory of numbers and theory of functions. Part 26, Zap. Nauchn. Sem. POMI, 392, POMI, St. Petersburg, pp 67–73 (2011) (Russian), translation in J. Math. Sci. (NY) 184(6), 699–702 (2012)
Evans, L.C., Gariepy, R.F.: Measure Theory and Fine Properties of Functions, Studies in Advanced Mathematics. CRC Press, Boca Raton (1992)
Heins, M.: On the Lindelöf principle. Ann. Math. 61(2), 440–473 (1955)
Kubo, T.: Hyperbolic transfinite diameter and some theorems on analytic functions in an annulus. J. Math. Soc. Jpn. 10(4), 348–364 (1958)
Koskela, P., Onninen, J.: Mappings of finite distortion: capacity and modulus inequalities. J. Reine Angew. Math. 599, 1–26 (2006)
Landkof, N.S.: Foundations of Modern Potential Theory. Springer, Berlin (1972)
Lehto, O., Virtanen, K.I.: Quasiconformal Mappings in the Plane, Second Edition, Die Grundlehren der mathematischen Wissenschaften, Band 126. Springer, Berlin (1973)
Martio, O.: A capacity inequality for quasiregular mappings. Ann. Acad. Sci. Fenn. Ser. A I(474), 1–18 (1970)
Mityuk, I.P.: Certain properties of functions regular in a multiply connected region, (Russian). Dokl. Akad. Nauk SSSR 164, 495–498 (1965)
Pouliasis, S.: Condenser capacity and meromorphic functions. Comput. Methods Funct. Theory 11(1), 237–245 (2011)
Ransford, T.: Potential Theory in the Complex Plane. Cambridge University Press, Cambridge (1995)
Rickman, S.: Quasiregular Mappings, Results in Mathematics and Related Areas (3), vol. 26. Springer, Berlin (1993)
Sevost’yanov, E.: The Väisälä inequality for mappings with finite length distortion. Complex Var. Elliptic Equ. 55(1–3), 91–101 (2010)
Srivastava, S.M.: A Course on Borel Sets, Graduate Texts in Mathematics, vol 180. Springer, Berlin (1998)
Väisälä, J.: Modulus and capacity inequalities for quasiregular mappings. Ann. Acad. Sci. Fenn. Ser. A I(509), 1–14 (1972)
Acknowledgments
The second author wants to thank Dimitrios Betsakos for interesting discussions on the subject.
Author information
Authors and Affiliations
Corresponding author
Additional information
Communicated by Alexander Solynin.
Rights and permissions
About this article
Cite this article
Papadimitrakis, M., Pouliasis, S. Condenser Capacity Under Multivalent Holomorphic Functions. Comput. Methods Funct. Theory 13, 11–20 (2013). https://doi.org/10.1007/s40315-012-0004-9
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s40315-012-0004-9