Items where Author is "Virtanen, Professor Jani"

Article

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

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

Basor, E., Ehrhardt, T. and Virtanen, J. (2025) A survey of asymptotics of determinants for structured matrices. In: Ball, J., Tylli, H.-O. and Virtanen, J. A. (eds.) Operator Theory, Related Fields, and Applications IWOTA 2023:. Birkhäuser, Cham. ISBN 9783032001542 doi: 10.1007/978-3-032-00155-9_3

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