Article

Chandler-Wilde, S. N. ORCID: https://orcid.org/0000-0003-0578-1283, Hagger, R., Perfekt, K.-M. and Virtanen, J. A. (2023) On the spectrum of the double-layer operator on locally-dilation-invariant Lipschitz domains. Numerische Mathematik, 153. pp. 653-699. ISSN 0029-599X doi: https://doi.org/10.1007/s00211-023-01353-z

Hagger, R., Liu, C., Taskinen, J. and Virtanen, J. A. (2022) Toeplitz operators on the unit ball with locally integrable symbols. Integral Equations and Operator Theory, 94 (2). 17. ISSN 1420-8989 doi: https://doi.org/10.1007/s00020-022-02695-3

Ehrhardt, T., Hagger, R. and Virtanen, J. (2021) Bounded and compact Toeplitz+Hankel matrices. Studia Mathematica, 2021 (260). pp. 103-120. ISSN 0039-3223 doi: https://doi.org/10.4064/sm200806-6-10

Hagger, R. and Virtanen, J. (2021) Compact Hankel operators with bounded symbols. Journal of Operator Theory, 86 (2). pp. 317-329. ISSN 1841-7744 doi: https://doi.org/10.7900/jot.2020apr27.2276

Hagger, R. (2019) A product expansion for Toeplitz operators on the Fock space. Proceedings of the American Mathematical Society, 147 (11). pp. 4823-4833. ISSN 0002-9939 doi: https://doi.org/10.1090/proc/14661

Bauer, W., Hagger, R. and Vasilevski, N. (2019) Algebras of Toeplitz operators on the n-dimensional unit ball. Complex Analysis and Operator Theory, 13 (2). pp. 493-524. ISSN 1661-8262 doi: https://doi.org/10.1007/s11785-018-0837-y

Fulsche, R. and Hagger, R. (2019) Fredholmness of Toeplitz operators on the Fock space. Complex Analysis and Operator Theory, 13 (2). pp. 375-403. ISSN 1661-8262 doi: https://doi.org/10.1007/s11785-018-0803-8

Hagger, R. (2019) Limit operators, compactness and essential spectra on bounded symmetric domains. Journal of Mathematical Analysis and Applications, 470 (1). pp. 470-499. ISSN 0022-247X doi: https://doi.org/10.1016/j.jmaa.2018.10.016

Bauer, W., Coburn, L. A. and Hagger, R. (2018) Toeplitz quantization on Fock space. Journal of Functional Analysis, 274 (12). pp. 3531-3551. ISSN 0022-1236 doi: https://doi.org/10.1016/j.jfa.2018.01.001

Bauer, W., Hagger, R. and Vasilevski, N. (2017) Uniform continuity and quantization on bounded symmetric domains. Journal of the London Mathematical Society, 96 (2). pp. 345-366. ISSN 1469-7750 doi: https://doi.org/10.1112/jlms.12069

Hagger, R. (2017) The essential spectrum of Toeplitz operators on the unit ball. Integral Equations and Operator Theory, 89 (4). pp. 519-556. ISSN 1420-8989 doi: https://doi.org/10.1007/s00020-017-2399-1

Hagger, R. (2016) On the spectrum and numerical range of tridiagonal random operators. Journal of Spectral Theory, 6 (2). pp. 215-266. ISSN 1664-039X doi: https://doi.org/10.4171/JST/124

Hagger, R. (2015) The eigenvalues of tridiagonal sign matrices are dense in the spectra of periodic tridiagonal sign operators. Journal of Functional Analysis, 269 (5). pp. 1563-1570. ISSN 0022-1236 doi: https://doi.org/10.1016/j.jfa.2015.01.019

Hagger, R., Lindner, M. and Seidel, M. (2015) Essential pseudospectra and essential norms of band-dominated operators. Journal of Mathematical Analysis and Applications, 437 (1). pp. 255-291. ISSN 0022-247X doi: https://doi.org/10.1016/j.jmaa.2015.11.060

Hagger, R. (2015) Symmetries of the Feinberg-Zee random hopping matrix. Random Matrices: Theory and Applications, 4 (4). 1550016. ISSN 2010-3271 doi: https://doi.org/10.1142/S2010326315500161

Book or Report Section

Chandler-Wilde, S. N. ORCID: https://orcid.org/0000-0003-0578-1283 and Hagger, R. (2017) On symmetries of the Feinberg-Zee random hopping matrix. In: Maz'ya, V., Natroshvili, D., Shargorodsky, E. and Wendland, W. L. (eds.) Recent Trends in Operator Theory and Partial Differential Equations: the Roland Duduchava Anniversary Volume. Operator Theory: Advances and Applications, 258. Birkhauser, Basel. ISBN 9783319470771