Items where Author is "Virtanen, Professor Jani"

Article

Bellavita, C., Daskalogiannis, V., Miihkinen, S., Norrbo, D., Stylogiannis, G. and Virtanen, J. (2025) Generalized Hilbert matrix operators acting on Bergman spaces. Journal of Functional Analysis, 288 (9). 110856. ISSN 0022-1236 doi: 10.1016/j.jfa.2025.110856

Arroussi, H., Tong, C., Virtanen, J. A. and Yuan, Z. (2025) Volterra-type inner derivations on Hardy spaces. Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas, 119 (2). ISSN 1579-1505 doi: 10.1007/s13398-025-01723-2

Basor, E., Ehrhardt, T. and Virtanen, J. (2025) Asymptotics of block Toeplitz determinants with piecewise continuous symbols. Communications on Pure and Applied Mathematics, 78 (1). pp. 120-160. ISSN 0010-3640 doi: 10.1002/cpa.22223

O'Loughlin, R. ORCID: https://orcid.org/0009-0003-7225-654X and Virtanen, J. (2024) Crouzeix's conjecture for classes of matrices. Linear Algebra and Its Applications, 697. pp. 277-292. ISSN 0024-3795 doi: 10.1016/j.laa.2023.12.008

Perälä, A. and Virtanen, J. (2023) Essential positivity. Proceedings of the American Mathematical Society, 151 (11). pp. 4807-4815. ISSN 0002-9939 doi: 10.1090/proc/16504

Hu, Z. and Virtanen, J. A. (2022) Schatten class Hankel operators on the Segal-Bargmann space and the Berger-Coburn phenomenon. Transactions of the American Mathematical Society, 375. pp. 3733-3753. ISSN 0002-9947 doi: 10.1090/tran/8638

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: 10.4064/sm200806-6-10

Taskinen, J. and Virtanen, J. (2020) On Fredholm properties of Toeplitz operators in Bergman spaces. Mathematical Methods in the Applied Sciences, 43 (16). pp. 9405-9415. ISSN 0170-4214 doi: 10.1002/mma.6268

Kozlowska, K. and Virtanen, J. (2019) Transition asymptotics of Toeplitz determinants and emergence of Fisher-Hartwig representations. Nonlinearity, 32 (10). pp. 3593-3645. ISSN 0951-7715 doi: 10.1088/1361-6544/ab127a

Taskinen, J. and Virtanen, J. (2018) On generalized Toeplitz and little Hankel operators on Bergman spaces. Archiv der Mathematik, 110 (2). pp. 155-166. ISSN 0003-889X doi: 10.1007/s00013-017-1124-2

Perala, A., Schuster, A. and Virtanen, J. A. (2014) Hankel operators on Fock spaces. Operator Theory: Advances and Applications, 236. pp. 377-390. ISSN 0255-0156 doi: 10.1007/978-3-0348-0648-0_24

Taskinen, J. and Virtanen, J. A. (2012) Weighted BMO and Toeplitz operators on the Bergman space A1. Journal of Operator Theory, 68 (1). pp. 131-140.

Taskinen, J. and Virtanen, J. A. (2012) Weighted BMO and Toeplitz operators on the Bergman space A1. Journal of Operator Theory, 68 (1). pp. 131-140. ISSN 0379-4024

Perälä, A., Taskinen, J. and Virtanen, J. (2011) Toeplitz operators with distributional symbols on Bergman spaces. Proceedings of the Edinburgh Mathematical Society, 54 (02). pp. 505-514. ISSN 0013-0915 doi: 10.1017/S001309151000026X

Perälä, A., Taskinen, J. and Virtanen, J. (2011) Toeplitz operators with distributional symbols on Fock spaces. Functiones et Approximatio Commentarii Mathematici, 44 (2). pp. 203-213. ISSN 0208-6573 doi: 10.7169/facm/1308749124

Perälä, A., Taskinen, J. and Virtanen, J. (2011) Toeplitz operators with distributional symbols on Fock spaces. Functiones et Approximatio, Commentarii Mathematici, 44 (2). pp. 203-213. ISSN 0208-6573 doi: 10.7169/facm/1308749124

Perälä, A. and Virtanen, J. A. (2011) A note on the Fredholm properties of Toeplitz operators on weighted Bergman spaces with matrix-valued symbols. Operators and Matrices, 5 (1). pp. 97-106. ISSN 1846-3886 doi: 10.7153/oam-05-06

Perälä, A. and Virtanen, J. A. (2011) A note on the Fredholm properties of Toeplitz operators on weighted Bergman spaces with matrix-valued symbols. Operators and Matrices, 5 (1). pp. 97-106. ISSN 1846-3886 doi: 10.7153/oam-05-06

Taskinen, J. and Virtanen, J. (2010) Toeplitz operators on Bergman spaces with locally integrable symbols. Revista Matemática Iberoamericana, 26 (2). pp. 693-706. ISSN 0213-2230 doi: 10.4171/RMI/614

Taskinen, J. and Virtanen, J. (2010) Toeplitz operators on Bergman spaces with locally integrable symbols. Revista Matematica Iberoamericana, 26 (2). pp. 693-706. ISSN 0213-2230 doi: 10.4171/RMI/614

Böttcher, A. and Virtanen, J. A. (2007) Norms of Toeplitz Matrices with Fisher-Hartwig Symbols. Siam Journal on Matrix Analysis and Applications. ISSN 0895-4798 doi: 10.1137/06066165X

Böttcher, A. and Virtanen, J. A. (2007) Norms of Toeplitz Matrices with Fisher-Hartwig Symbols. SIAM Journal on Matrix Analysis and Applications. ISSN 0895-4798 doi: 10.1137/06066165X

Book or Report Section

Taskinen, J. and Virtanen, J. A. (2022) Boundedness of Toeplitz operators in Bergman-type spaces. In: Aron, R. M., Moslehian, M. S., Spitkovsky, I. M. and Woerdeman, H. J. (eds.) Operator and Norm Inequalities and Related Topics:. Trends in Mathematics. Birkhäuser, pp. 461-490. ISBN 9783031021039 doi: 10.1007/978-3-031-02104-6_14

Virtanen, J. A. (2022) On the product formula for Toeplitz and related operators. In: Basor, E., Böttcher,, A., Ehrhardt,, T. and Tracy, C. A. (eds.) Toeplitz Operators and Random Matrices:. Operator Theory: Advances and Applications. Birkhäuser, Cham., pp. 605-616. ISBN 9783031138508 doi: 10.1007/978-3-031-13851-5_26

Book

Ball, J., Tylli, H.-O. and Virtanen, J. (2025) Operator theory, related fields, and applications. Birkhäuser Cham. ISBN 9783032001542 doi: 10.1007/978-3-032-00155-9 (IWOTA 2023, Helsinki, Finland)

Ball, J., Tylli, H.-O. and Virtanen, J. (2025) Operator theory, related fields, and applications. Birkhäuser Cham. ISBN 9783032001542 doi: 10.1007/978-3-032-00155-9