## Found 833 Documents (Results 1–100)

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### Inner outer factorization of wide rational matrix valued functions on the half plane. (English)Zbl 07393031

Bastos, M. Amélia (ed.) et al., Operator theory, functional analysis and applications. Proceedings of the 30th international workshop on operator theory and its applications, IWOTA 2019, Lisbon, Portugal, July 22–26, 2019. Cham: Birkhäuser. Oper. Theory: Adv. Appl. 282, 219-233 (2021).
MSC:  47B35 47A68 30J99
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### External Jensen-type operator inequalities via superquadraticity. (English)Zbl 07472181

MSC:  26D15 47A56
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### 40 years of the direct matrix-valued Lyapunov function method (review). (English. Russian original)Zbl 1462.34002

Int. Appl. Mech. 56, No. 3, 253-325 (2020); translation from Prikl. Mekh., Kiev 56, No. 3, 3-75 (2020).
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### Closed-form solvability of a linear conjugation problem for three-dimensional piecewise analytic vector. (English. Russian original)Zbl 1468.30065

Russ. Math. 64, No. 10, 59-65 (2020); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2020, No. 10, 65-72 (2020).
MSC:  30E25 47A56
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### Regular extensions and defect functions of contractive measurable operator-valued functions. (English)Zbl 07310479

Alpay, Daniel (ed.) et al., Complex function theory, operator theory, Schur analysis and systems theory. A volume in honor of V. E. Katsnelson. Cham: Birkhäuser. Oper. Theory: Adv. Appl. 280, 139-228 (2020).
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### Analogue of Chernoff theorem for cylindrical pseudomeasures. (English)Zbl 1469.46036

MSC:  46G12 60H40 47A56
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### Inverse of generalized Nevanlinna function that is holomorphic at infinity. (English)Zbl 07297296

MSC:  47B50 47A56 30E99
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MSC:  43A35
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### Inverse and implicit function theorems for noncommutative functions on operator domains. (English)Zbl 1463.46092

MSC:  46L52 47A56 47J07
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### Quantization of some generalized Jaynes-Cummings models in a Kerr-like medium. (English. Russian original)Zbl 1445.81075

Theor. Math. Phys. 203, No. 3, 824-836 (2020); translation from Teor. Mat. Fiz. 203, No. 3, 451-466 (2020).
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### W. Stenger’s and M. A. Nudelman’s results and resolvent formulas involving compressions. (English)Zbl 1481.47035

MSC:  47B25 47A20 47A56
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### On the Nevanlinna problem: characterization of all Schur-Agler class solutions affiliated with a given kernel. (English)Zbl 1480.47020

MSC:  47A48 47A56 47A57
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### The block rational Arnoldi method. (English)Zbl 1441.65047

MSC:  65F25 65F15 65F50
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### Computing the degrees of freedom of rank-regularized estimators and cousins. (English)Zbl 1439.62142

MSC:  62H12 62M15
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### A mean value formula and a Liouville theorem for the complex Monge-Ampère equation. (English)Zbl 1434.53040

MSC:  53C21 32W20
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### Spectral analysis and representation of solutions of integro-differential equations with fractional exponential kernels. (English. Russian original)Zbl 1447.45011

Trans. Mosc. Math. Soc. 2019, 169-188 (2019); translation from Tr. Mosk. Mat. O.-va 80, No. 2, 197-220 (2019).
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### Multilinear operator integrals. Theory and applications. (English)Zbl 1458.47003

Lecture Notes in Mathematics 2250. Cham: Springer (ISBN 978-3-030-32405-6/pbk; 978-3-030-32406-3/ebook). xi, 190 p. (2019).
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### Multiplicative Stieltjes functions and associated pairs of reproducing kernel Hilbert spaces. (English)Zbl 1442.46021

Alpay, Daniel (ed.) et al., Linear systems, signal processing and hypercomplex analysis. Selected papers of the conference on mathematics, signal processing and linear systems: new problems and directions, Chapman University, Orange, CA, USA, November 14–19, 2017. Cham: Birkhäuser. Oper. Theory: Adv. Appl. 275, 1-47 (2019).
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### Interpolation between Hilbert spaces. (English)Zbl 1437.46025

Aleman, Alexandru (ed.) et al., Analysis of operators on function spaces. The Serguei Shimorin memorial volume. Including extended versions of lectures of the conference in honor of the memory of Serguei Shimorin at the Mittag-Leffler Institute, Stockholm, Sweden in the summer of 2018. Cham: Springer. Trends Math., 63-115 (2019).
MSC:  46B70 47A56 47A63
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### An improvement of Hardy’s inequality for Hilbert space operators. (English)Zbl 1428.26042

MSC:  26D15 47A56
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### A note on inner-outer factorization of wide matrix-valued functions. (English)Zbl 1459.47011

Bart, Harm (ed.) et al., Operator theory, analysis and the state space approach. In honor of Rien Kaashoek. Cham: Birkhäuser. Oper. Theory: Adv. Appl. 271, 201-214 (2018).
MSC:  47A68 47B35 30J99
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### Standard versus strict bounded real lemma with infinite-dimensional state space. III: The dichotomous and bicausal cases. (English)Zbl 1454.47021

Bart, Harm (ed.) et al., Operator theory, analysis and the state space approach. In honor of Rien Kaashoek. Cham: Birkhäuser. Oper. Theory: Adv. Appl. 271, 23-73 (2018).
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### An inequality for projections and convex functions. (English)Zbl 1462.46067

MSC:  46L10 47A56
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### Closed-form formulas for calculating the max-min ranks of a triple matrix product composed by generalized inverses. (English)Zbl 1413.15002

MSC:  15A03 15A09 15A24
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### Spectral functions for the vector-valued Fourier transform. (English)Zbl 1457.42012

MSC:  42A38 46E40
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### Factorization of triangular matrix-functions of an arbitrary order. (English)Zbl 1440.47015

Lobachevskii J. Math. 39, No. 6, 809-817 (2018); retraction note ibid. 40, No. 1, 114 (2019).
MSC:  47A68 47A56 30E25
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### Free holomorphic functions on the noncommutative polydomains and universal models. (English)Zbl 06965838

MSC:  47A13 46L52 47A56
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### Compressions of self-adjoint extensions of a symmetric operator and M.G. Krein’s resolvent formula. (English)Zbl 06946537

MSC:  47B25 47A20 47A56
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### Some analytic properties of the Weyl function of a closed linear relation. (English)Zbl 06929714

MSC:  47A06 47A56 47B25
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### Bernstein functions of several semigroup generators on Banach spaces under bounded perturbations. II. (English)Zbl 06905103

MSC:  47A56 47B10 47L20
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### How to establish exact formulas for calculating the max-min ranks of products of two matrices and their generalized inverses. (English)Zbl 1386.15007

MSC:  15A03 15A09 15A24
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### Factorization of triangular matrix-functions of an arbitrary order. (English)Zbl 1440.47014

MSC:  47A68 47A56 30E25
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### Notes on the codimension one conjecture in the operator corona theorem. (English. Russian original)Zbl 1482.47021

J. Math. Sci., New York 229, No. 5, 506-517 (2018); translation from Zap. Nauchn. Semin. POMI 447, 33-50 (2016).
MSC:  47A45 47A56
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### Operator functions and operator equations. (English)Zbl 1422.47004

Hackensack, NJ: World Scientific (ISBN 978-981-3221-26-0/hbk; 978-981-3221-28-4/ebook). xiii, 245 p. (2018).
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### Finite-dimensional self-adjoint extensions of a symmetric operator with finite defect and their compressions. (English)Zbl 06864062

Colombo, Fabrizio (ed.) et al., Advances in complex analysis and operator theory. Festschrift in honor of Daniel Alpay’s 60th birthday. Contributions partly based on the presentations at the international conference on complex analysis and operator theory, Chapman University, Orange, CA, USA, November 2016. Cham: Birkhäuser/Springer. Trends Math., 135-163 (2017).
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### Upper and lower bounds for the rank of the matrix-valued function $$A+BXC$$ when $$X$$ has a fixed rank. (English)Zbl 1387.15013

MSC:  15A23 15A24 65F05
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### Analytic operator Lipschitz functions in the disk and a trace formula for functions of contractions. (English. Russian original)Zbl 06835367

Funct. Anal. Appl. 51, No. 3, 185-203 (2017); translation from Funkts. Anal. Prilozh. 51, No. 3, 33-55 (2017).
MSC:  47A56
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### Large-scale computation of $$\mathcal{L}_\infty$$-norms by a greedy subspace method. (English)Zbl 1379.65020

MSC:  65F30 65F60 15A60 65D05 65E05
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### The Nevanlinna-type parametrization for the operator Hamburger moment problem. (English)Zbl 06769262

MSC:  47A57 47A56
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### Bernstein functions of several semigroup generators on Banach spaces under bounded perturbations. (English)Zbl 1367.47023

MSC:  47A56 47B10 47L20
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