Abstract
We study Bergman space functions that are mean Hölder continuous with respect to the Bergman space norm. In contrast with earlier work, we use the second iterated difference quotient instead of the first. We then give applications to Bergman space extremal problems.
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Ball, K., Carlen, E.A., Lieb, E.H.: Sharp uniform convexity and smoothness inequalities for trace norms. Invent. Math. 115(3), 463–482 (1994)
Bénéteau, C., Khavinson, D.: A survey of linear extremal problems in analytic function spaces, complex analysis and potential theory, CRM Proceedings Lecture Notes, vol. 55, Am. Math. Soc., Providence, RI, pp. 33–46 (2012)
Bénéteau, C., Khavinson, D.: Selected problems in classical function theory, invariant subspaces of the shift operator, Contemp. Math., vol. 638, Am. Math. Soc., Providence, RI, pp. 255–265 (2015)
Duren, P.: Theory of \(H^{p}\) spaces, Pure and Applied Mathematics, vol. 38. Academic Press, New York (1970)
Duren, P., Schuster, A.: Bergman Spaces, Mathematical Surveys and Monographs. American Mathematical Society, Providence, RI (2004)
Ferguson, T.: Bounds on integral means of Bergman projections and their derivatives, arXiv:1503.04121
Ferguson, T.: Continuity of extremal elements in uniformly convex spaces. Proc. Am. Math. Soc. 137(8), 2645–2653 (2009)
Ferguson, T.: Extremal problems in Bergman spaces and an extension of Ryabykh’s theorem, Illinois J. Math. 55 (2011), no. 2, 555–573 (2012)
Ferguson, T.: Extremal problems in Bergman spaces and an extension of Ryabykh’s Hardy space regularity theorem for \(1 < p < \infty \). Indiana Univ. Math. J. 66, 259–274 (2017)
Galanopoulos, P., Siskakis, A.G., Stylogiannis, G.: Mean Lipschitz conditions on Bergman space. J. Math. Anal. Appl. 424(1), 221–236 (2015)
Hedenmalm, H., Korenblum, B., Zhu, K.: Theory of Bergman spaces, Graduate Texts in Mathematics, vol. 199. Springer-Verlag, New York (2000)
Khavinson, D., McCarthy, J.E., Shapiro, H.S.: Best approximation in the mean by analytic and harmonic functions. Indiana Univ. Math. J. 49(4), 1481–1513 (2000)
Khavinson, D., Stessin, M.: Certain linear extremal problems in Bergman spaces of analytic functions. Indiana Univ. Math. J. 46(3), 933–974 (1997)
Ryabykh, V.G.: Extremal problems for summable analytic functions, Sibirsk. Mat. Zh. 27 (1986), no. 3, 212–217, 226 (in Russian)
Harold, S.: Shapiro, Regularity properties of the element of closest approximation. Trans. Am. Math. Soc. 181, 127–142 (1973)
Stein, E.M.: Singular integrals and differentiability properties of functions, Princeton Mathematical Series, No. 30, Princeton University Press, Princeton, N.J., (1970)
Wang, C., Xiao, J., Zhu, K.: Logarithmic convexity of area integral means for analytic functions II. J. Aust. Math. Soc. 98(1), 117–128 (2015)
Wang, C., Zhu, K.: Logarithmic convexity of area integral means for analytic functions. Math. Scand. 114(1), 149–160 (2014)
Xiao, J., Zhu, K.: Volume integral means of holomorphic functions. Proc. Am. Math. Soc. 139(4), 1455–1465 (2011)
Zygmund, A.: Smooth functions. Duke Math. J. 12, 47–76 (1945)
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Partially supported by RGC Grant RGC-2015-22 from the University of Alabama.
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Ferguson, T. Bergman–Hölder Functions, Area Integral Means and Extremal Problems. Integr. Equ. Oper. Theory 87, 545–563 (2017). https://doi.org/10.1007/s00020-017-2366-x
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DOI: https://doi.org/10.1007/s00020-017-2366-x