[1] Choe B, Koo H, Park I. Compact differences of composition operators on the Bergman spaces over the ball. Potential Anal, 2014, 40: 81-102 [2] Choe B, Koo H, Wang M. Compact double differences of composition operators on the Bergman spaces. J Funct Anal, 2017, 272: 2273-2307 [3] Choe B, Koo H, Wang M. Compact linear combination of composition operators on Bergman spaces. J Funct Anal, 2020, 278: 108393 [4] Choe B, Koo H, Yang J. Compact double differences of composition operators on the Bergman spaces over the ball. Tohoku Math J, 2019, 71: 609-637 [5] Cowen C, MacCluer B. Composition Operators on Spaces of Analytic Functions. Boca Raton, FL: CRC Press, 1995 [6] Duren P, Weir R. The pseudohyperbolic metric and Bergman spaces in the ball. Trans Amer Math Soc, 2007, 359: 63-76 [7] El-Fallah O, Kellay K, Shabankhah M, Youssfi H. Level sets and composition operators on the Dirichlet space. J Funct Anal, 2011, 260: 1721-1733 [8] Galindo P, Laitila J, Lindström M. Essential norm estimates for composition operators on BMOA. J Funct Anal, 2013, 265: 629-643 [9] Gu C, Koo H. Compact difference of composition operators with smooth symbols on the unit ball. J Math Anal Appl, 2022, 506: 125555 [10] Guo X, Wang M. Linear combination of composition operators on Bergman and Korenblum spaces. Potential Anal, 2022, 57: 305-326 [11] Guo X, Wang M. Compact linear combinations of composition operators over the unit ball. J Operator Theory, 2022, 88: 59-82 [12] Halmos P. Measure Theory.New York: Springer-Verlag, 1974 [13] Hedenmalm H, Korenblum B, Zhu K.Theory of Bergman spaces. New York: Springer-Verlag, 2000 [14] Hyvärinen O, Kemppainen M, Lindström M, et al. The essential norm of weighted composition operators on weighted Banach spaces of analytic functions. Integr Equ Oper Theory, 2012, 72: 151-157 [15] Izuchi K, Ohno S. Linear combinations of composition operators on $H^{\infty}$. J Math Anal Appl, 2008, 338: 820-839 [16] Koo H, Wang M. Joint Carleson measure and the difference of composition operators on $A_{\alpha^{p}(\mathbf{B}_{n})}$. J Math Anal Appl, 2014, 419: 1119-1142 [17] Koo H, Wang M. Cancellation properties of composition operators on Bergman spaces. J Math Anal Appl, 2015, 432(2): 1174-1182 [18] Kriete T, Moorhouse J. Linear relations in the Calkin algebra for composition operators. Trans Amer Math Soc, 2007, 359: 2915-2944 [19] Moorhouse J. Compact differences of composition operators. J Funct Anal, 2005, 219: 70-92 [20] Shapiro J.Composition Operators and Classical Function Theory. New York: Springer-Verlag, 1993 [21] Toews C. Topological components of the set of composition operators on $H^{\infty}\left(\mathbb{B}_N\right)$. Integr Equ Oper Theory, 2004, 48: 265-280 [22] Wang M, Guo X. Difference of composition operators on the Bergman spaces over the ball. Oper Matrices, 2018, 12: 1177-1197 [23] Wulan H, Zheng D, Zhu K. Compact composition operators on BMOA and the Bloch space. Proc Amer Math Soc, 2009, 137: 3861-3868 [24] Yao X. Linear combinations of composition operators on $H^{\infty}$ spaces over the unit ball and polydisk. J Inequal Appl, 2021, 1: Article 52 [25] Zhu K. Compact composition operators on Bergman spaces of the unit ball. Houston J Math, 2007, 33: 273-283 |