Zobrazeno 1 - 10
of 84
pro vyhledávání: '"T. W. Martin"'
Autor:
Michael T. Jury, Robert T. W. Martin
Publikováno v:
Integral Equations and Operator Theory. 94
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59c8708584eb2e4cead6c6378a5acd77
https://doi.org/10.1007/s00020-022-02690-8
https://doi.org/10.1007/s00020-022-02690-8
The main objects of study in this paper are those functionals that are analytic in the sense that they annihilate the non-commutative disc algebra. In the classical univariate case, a theorem of F. and M. Riesz implies that such functionals must be g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::384944b06ce2d23c5330147f2acd8c96
http://arxiv.org/abs/2104.02130
http://arxiv.org/abs/2104.02130
Autor:
Robert T. W. Martin, Michael T. Jury
Publikováno v:
Bulletin of the London Mathematical Society. 51:223-229
Let $\mathcal H$ be a reproducing kernel Hilbert space with a normalized complete Nevanlinna-Pick (CNP) kernel. We prove that if $(f_n)$ is a sequence of functions in $\mathcal H$ with $\sum\|f_n\|^2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8765d101abdea01230ca08d5e1ebd3ff
https://doi.org/10.1112/blms.12222
https://doi.org/10.1112/blms.12222
Autor:
Robert T. W. Martin, Michael T. Jury
Publikováno v:
Proceedings of the American Mathematical Society. 146:4293-4306
We give a new characterization of the so-called quasi-extreme multipliers of the Drury–Arveson space H d 2 H^2_d and show that every quasi-extreme multiplier is an extreme point of the unit ball of the multiplier algebra of H d 2 H^2_d .
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b0b91a47fb06d1be06bda349ad7e8b8
https://doi.org/10.1090/proc/14062
https://doi.org/10.1090/proc/14062
Autor:
Robert T. W. Martin, Achim Kempf
Publikováno v:
Journal of Mathematical Analysis and Applications. 458:1597-1638
Motivated by applications to signal processing and mathematical physics, recent work on the concept of time-varying bandwidth has produced a class of function spaces which generalize the Paley–Wiener spaces of bandlimited functions: any regular sim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63f9abc4e18391f57f95fdad97e09a30
https://doi.org/10.1016/j.jmaa.2017.10.018
https://doi.org/10.1016/j.jmaa.2017.10.018
Publikováno v:
Interpolation and Realization Theory with Applications to Control Theory ISBN: 9783030116132
In the de Branges–Rovnyak functional model for contractions on Hilbert space, any completely non-coisometric (CNC) contraction is represented as the adjoint of the restriction of the backward shift to a de Branges– Rovnyak space, \(\mathcal{H}(b)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13cbab5b0f934a640688001a429a8548
https://doi.org/10.1007/978-3-030-11614-9_11
https://doi.org/10.1007/978-3-030-11614-9_11
Autor:
Eli Shamovich, Robert T. W. Martin
Publikováno v:
Journal of Mathematical Analysis and Applications. 496:124765
We extend the de Branges-Beurling theorem characterizing the shift-invariant spaces boundedly contained in the Hardy space of square-summable power series to the full Fock space over C d . Here, the full Fock space is identified as the Non-commutativ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b60007fd3a974ba581d6fc8eab6e31f1
https://doi.org/10.1016/j.jmaa.2020.124765
https://doi.org/10.1016/j.jmaa.2020.124765
Publikováno v:
Journal of Functional Analysis. 280:108830
This paper deals with families of matrix-valued Aleksandrov--Clark measures $\{\boldsymbol{\mu}^\alpha\}_{\alpha\in\mathcal{U}(n)}$, corresponding to purely contractive $n\times n$ matrix functions $b$ on the unit disc of the complex plane. We do not
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84eeeb39fb409194684e12dbee416b85
https://doi.org/10.1016/j.jfa.2020.108830
https://doi.org/10.1016/j.jfa.2020.108830
Autor:
Jeremy Levick, Robert T. W. Martin
We study unital quantum channels which are obtained via partial trace of a $*$-automorphism of a finite unital matrix $*$-algebra. We prove that any such channel, $q$, on a unital matrix $*$-algebra, $\mathcal{A}$, admits a finite matrix $N-$dilation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ab2aca7d9e412cbdfec28a5095f1bd2
http://arxiv.org/abs/1808.04677
http://arxiv.org/abs/1808.04677
Autor:
Robert T. W. Martin, Michael T. Jury
The Smirnov class for the classical Hardy space is the set of ratios of bounded analytic functions in the open complex unit disk with outer denominators. This definition extends naturally to the commutative and non-commutative multi-variable settings
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::30922ca3cbf2166268f19a3c7b256e2b
http://arxiv.org/abs/1807.08373
http://arxiv.org/abs/1807.08373