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FINITE SUM OF COMPOSITION OPERATORS ON FOCK SPACE

Published online by Cambridge University Press:  20 December 2021

PHAM VIET HAI*
Affiliation:
Faculty of Mathematics, Mechanics and Informatics, University of Science, Vietnam National University, Hanoi, Vietnam

Abstract

We investigate unbounded, linear operators arising from a finite sum of composition operators on Fock space. Real symmetry and complex symmetry of these operators are characterised.

Type
Research Article
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of Australian Mathematical Publishing Association Inc.

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Footnotes

This research was supported by the research project QG.21.02 ‘Some problems in operator theory and complex analysis’ of Vietnam National University, Hanoi, Vietnam.

References

Berkson, E., ‘Composition operators isolated in the uniform operator topology’, Proc. Amer. Math. Soc. 81 (1981), 230232.Google Scholar
Carswell, B. J., MacCluer, B. D. and Schuster, A., ‘Composition operators on the Fock space’, Acta Sci. Math. (Szeged) 69(3–4) (2003), 871887.Google Scholar
Choe, B. R., Izuchi, K. H. and Koo, H., ‘Linear sums of two composition operators on the Fock space’, J. Math. Anal. Appl. 369(1) (2010), 112119.Google Scholar
Cowen, C. C. and MacCluer, B. D., Composition Operators on Spaces of Analytic Functions (CRC Press, Boca Raton, FL, 1995).Google Scholar
Dieu, N. Q. and Ohno, S., ‘Complete continuity of linear combinations of composition operators’, Arch. Math. 94(1) (2010), 6772.Google Scholar
Garcia, S. R. and Hammond, C., ‘Which weighted composition operators are complex symmetric?’, Concrete Operators, Spectral Theory, Operators in Harmonic Analysis and Approximation: 22nd Int. Workshop in Operator Theory and its Applications, IWOTA 11, Sevilla, Spain, 2011 (eds. Boiso, M. C., Hedenmalm, H., Kaashock, M. A., Rodríguez, A. M. and Treil, S.) (Birkhäuser, Basel, 2014), 171179.Google Scholar
Garcia, S. R., Prodan, E. and Putinar, M., ‘Mathematical and physical aspects of complex symmetric operators’, J. Phys. A 47(35) (2014), Article no. 353001.CrossRefGoogle Scholar
Garcia, S. R. and Putinar, M., ‘Complex symmetric operators and applications’, Trans. Amer. Math. Soc. 358(3) (2006), 12851315.Google Scholar
Garcia, S. R. and Putinar, M., ‘Complex symmetric operators and applications. II’, Trans. Amer. Math. Soc. 359(8) (2007), 39133931.Google Scholar
Hai, P. V., ‘Unbounded weighted composition operators on Fock space’, Potential Anal. 53(1) (2020), 121.Google Scholar
Hai, P. V. and Khoi, L. H.Complex symmetry of weighted composition operators on the Fock space’, J. Math. Anal. Appl. 433(2) (2016), 17571771.Google Scholar
Hosokawa, T., Nieminen, P. J. and Ohno, S., ‘Linear combinations of composition operators on the Bloch spaces’, Canad. J. Math. 63(4) (2011), 862877.CrossRefGoogle Scholar
Jung, S., Kim, Y., Ko, E. and Lee, J. E., ‘Complex symmetric weighted composition operators on ${H}^2(D)$ ’, J. Funct. Anal. 267(2) (2014), 323351.Google Scholar
Le, T.Normal and isometric weighted composition operators on the Fock space’, Bull. Lond. Math. Soc. 46(4) (2014), 847856.CrossRefGoogle Scholar
Mead, D. G., ‘Newton’s identities’, Amer. Math. Monthly 99(8) (1992), 749751.Google Scholar
Nordgren, E. A., ‘Composition operators’, Canad. J. Math. 20 (1968), 442449.CrossRefGoogle Scholar
Schmüdgen, K., Unbounded Self-Adjoint Operators on Hilbert Space, Graduate Texts in Mathematics, 265 (Springer, Dordrecht, 2012).Google Scholar
Shapiro, J. H., Composition Operators and Classical Function Theory (Springer, New York, 1993).Google Scholar
Shapiro, J. H. and Sundberg, C., ‘Isolation amongst the composition operators’, Pacific J. Math. 145(1) (1990), 117152.Google Scholar
Szafraniec, F. H., ‘The reproducing kernel property and its space: the basics’, in: Operator Theory (ed. Alpay, D.) (Springer, Basel, 2015), 330.Google Scholar