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Boundary behaviour of the span metric and its higher-order curvatures

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Abstract

In this note, we use scaling principle to study the boundary behaviour of the span metric and its higher-order curvatures on finitely connected Jordan planar domains. A localization of this metric near boundary points of finitely connected Jordan domains is also obtained. Further, we obtain boundary sharp estimates for the span metric near \( C^2 \)-smooth boundary points on such domains.

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References

  1. Ahlfors, L., Beurling, A.: Conformal invariants and function-theoretic null-sets. Acta Math. 83, 101–129 (1950)

    Article  MathSciNet  Google Scholar 

  2. Bergman, S.: The kernel function and conformal mapping, revised, American Mathematical Society, Providence, R.I., . Mathematical Surveys, No. V (1970)

  3. Bergman, S., Chalmers, B.: A procedure for conformal mapping of triply-connected domains. Math. Comput. 21, 527–542 (1967)

    Article  MathSciNet  Google Scholar 

  4. Boas, H.P.: The Lu Qi-Keng conjecture fails generically. Proc. Am. Math. Soc. 124(7), 2021–2027 (1996)

    Article  MathSciNet  Google Scholar 

  5. Borah, D., Haridas, P., Verma, K.: Comments on the Green’s function of a planar domain. Anal. Math. Phys. 8(3), 383–414 (2018)

    Article  MathSciNet  Google Scholar 

  6. Burbea, J.: Capacities and spans on Riemann surfaces. Proc. Am. Math. Soc. 72(2), 327–332 (1978)

    Article  MathSciNet  Google Scholar 

  7. Burbea, J.: The higher order curvatures of weighted span metrics on Riemann surfaces. Arch. Math. (Basel) 43(5), 473–479 (1984)

    Article  MathSciNet  Google Scholar 

  8. Conway, J.B.: Functions of one complex variable. II, Graduate Texts in Mathematics, vol. 159. Springer, New York (1995)

    Book  Google Scholar 

  9. Falconer, K.J.: The geometry of fractal sets, Cambridge tracts in mathematics, vol. 85. Cambridge University Press, Cambridge (1986)

    Google Scholar 

  10. Garabedian, P.R., Schiffer, M.: On existence theorems of potential theory and conformal mapping. Ann. Math. 2(52), 164–187 (1950)

    Article  MathSciNet  Google Scholar 

  11. Greene, R.E., Kim, K.T., Krantz, S.G.: The geometry of complex domains. In: Progress in mathematics, vol. 291. Birkhäuser Boston Inc, Boston (2011)

    Google Scholar 

  12. Sakai, M.: Analytic functions with finite Dirichlet integrals on Riemann surfaces. Acta Math. 142(3–4), 199–220 (1979)

    Article  MathSciNet  Google Scholar 

  13. Sakai, M.: The sub-mean-value property of subharmonic functions and its application to the estimation of the Gaussian curvature of the span metric. Hiroshima Math. J. 9(3), 555–593 (1979)

    Article  MathSciNet  Google Scholar 

  14. Sario, L., Nakai, M.: Classification theory of Riemann surfaces. In: Die Grundlehren der mathematischen Wissenschaften, Band 164. Springer, New York (1970)

  15. Sarkar, A.D., Verma, K.: Boundary behaviour of some conformal invariants on planar domains. Comput. Methods Funct. Theory 20(1), 145–158 (2020)

    Article  MathSciNet  Google Scholar 

  16. Sugawa, T.: Unified approach to conformally invariant metrics on Riemann surfaces. In: Proceedings of the second ISAAC congress (Fukuoka, 1999), vol. 2, pp. 1117–1127. (2000)

  17. Sugawa, T.: A conformally invariant metric on Riemann surfaces associated with integrable holomorphic quadratic differentials. Math. Z. 266(3), 645–664 (2010)

    Article  MathSciNet  Google Scholar 

  18. Suita, Nobuyuki: Capacities and kernels on Riemann surfaces. Arch. Ration. Mech. Anal. 46, 212–217 (1972)

    Article  MathSciNet  Google Scholar 

  19. Zarankiewicz, K.: Uber ein numerisches verfahren zur konformen abbildung zweifach zusammenhängender Gebiete. Z. Angew. Math. Mech. 14(2), 97–104 (1934)

    Article  Google Scholar 

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Acknowledgements

The author would like to thank Kaushal Verma for fruitful discussions. The author also would like to thank the referee for carefully reading the paper, and for many useful suggestions that have improved the paper.

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Correspondence to Amar Deep Sarkar.

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The author is supported by the postdoctoral fellowship of Harish-Chandra Research Institute, Allahabad.

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Sarkar, A.D. Boundary behaviour of the span metric and its higher-order curvatures. Complex Anal Synerg 8, 16 (2022). https://doi.org/10.1007/s40627-022-00106-2

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