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Ruhan Zhao, PHD

Distinguished Professor

(585) 395-2134
rzhao@brockport.edu
Office: Brown Building 142
Website

Recipient of the Chancellor's Award for

Scholarship & Creative Activity

Education

PhD Mathematics, University of Joensuu, Finland

Areas of Specialty

Complex Analysis and Operator Theory

P. Galanopoulos, A. G. Siskakis, R. Zhao, Weighted Cesàro type operators between weighted Bergman spaces. Bull. Sci. Math. 202 (2025), Paper No. 103622.
J. S. Manhas and R. Zhao, Fredholm and frame-preserving weighted composition operators. Complex Anal. Oper. Theory 18 (2024), no. 2, Paper No. 34, 13 pp.
G. T. Prajitura, R. Zhao and L. Zhou, On Berezin type operators and Toeplitz operators on Bergman spaces, Banach J. Math. Anal. 17 (2023), no. 3, 58.
X. Liu, Z. Lou and R. Zhao, Area operators on Hardy spaces in the unit ball of Cⁿ, J. Math. Anal. Appl. 513 (2022), no. 2, Paper No. 126222, 22 pp.
D. Li, H. Wulan and R. Zhao, D_K spaces and Carleson measures, Acta Math. Sci. Ser. B (Engl. Ed.) 42 (2022), no. 3, 1103-1112.
R. Zhao and L. Zhou, L^p-L^q boundedness of Forelli-Rudin type operators on the unit ball of Cⁿ, Journal of Functional Analysis, 282 (2022), no. 5, Paper No. 109345, 26 pp.
X. Liu, Z. Lou and R. Zhao, A new characterization of Carleson measures on the unit ball of Cⁿ, Integral Equations and Operator Theory, 93:51 (2021).
J. S. Manhas, G. T. Prajitura and R. Zhao, Weighted composition operators that preserve frames, Integral Equations and Operator Theory, 91:34 (2019).
D. Li, H. Wulan and R. Zhao, Coefficient multipliers on Dirichlet type spaces, Bull. Korean Math. Soc., 56 (2019), No. 3, 691-702.
Edgar Tchoundja and Ruhan Zhao, Weak factorization and Hankel forms for Bergman- Orlicz spaces on the unit ball, Integral Equations and Operator Theory, 91:16 (2019).
L. Jiang, G. T. Prajitura and R. Zhao, Korenblum’s Maximum Principle for the Bloch space, The First NEAM: Conference Proceedings, Brockport 2016, The Theta Foundation, 2018, pp 59-80.
J. S. Manhas and R. Zhao, Products of weighted composition operators and differentiation operators into weighted Zygmund and Bloch spaces, Acta Mathematica Scientia, 38B (2018), no. 4, 1105-1120
J. S. Manhas and R. Zhao, Closures of Hardy and Hardy-Sobolev spaces in the Bloch type space on the unit ball, Complex Analysis and Operator Theory, 12 (2018), no.5, 1303-1313.
L. Jiang, G. T. Prajitura and R. Zhao, Some characterizations for composition operators on the Fock spaces, J. Math. Anal. Appl., 455 (2017), 1204-1220.
J. Pau, R. Zhao and K. Zhu, BMO type spaces and Hankel operators between weighted Bergman spaces, Indiana University Mathematics Journal, 65 (2016) No. 5, 1639–1673.
Bingyang Hu, Le Hai Khoi and Ruhan Zhao, Topological structure of the spaces of composition operators on Hilbert spaces of Dirichlet series, Zeitschrift für Analysis und ihre Anwendungen (Journal of Analysis and its Applications) 35 (2016), no. 3, 267–284.
L. Jiang, C. Ouyang, and R. Zhao, Essential Normality of Automorphic Composition Operators, Acta Scientiarum Mathematicarum (Szeged), 82 (2016), no. 1-2, 65-100.
J. Pau and R. Zhao, Carleson Measures and Toeplitz operators for weighted Bergman spaces on the unit ball, Michigan Mathematical Journal, 64 (2015), no. 4, 759–796.
J. S. Manhas and R. Zhao, Essential norms of products of weighted composition operators and differentiation operators between Banach spaces of analytic functions, Acta Mathematica Scientia, Series B, English Edition, 35 (2015), no. 6, 1401-1410.
J. Pau and R. Zhao, Weak factorization and Hankel forms for weighted Bergman spaces on the unit ball, Mathematische Annalen, 363 (2015), no. 1-2, 363-383.
R. Zhao, Generalization of Schur’s test and its application to a class of integral operators on the unit ball of Cⁿ, Integral Equations and Operator Theory, 82 (2015), 519-532.
J. S. Manhas and R. Zhao, Products of weighted composition operators and differentiation operators between Banach spaces of analytic functions, Acta Scientiarum Mathematicarum (Szeged), 80 (2014), 665–679.
J. Pau and R. Zhao, Carleson measures, Riemann-Stieltjes and multiplication operators on F(p,q,s) spaces, Integral Equations and Operator Theory, 78 (2014), no. 4, 483-514.
P. Chaisuriya, L. F. Reséndis O., L. M. Tovar S. and R. Zhao, A new class of analytic function with measures, Complex Variables and Elliptic Equations, 58 (2013), 1145-1160.

Open gallery

Ruhan Zhao, PHD

Education

Areas of Specialty

Recent Publications