Found 597 Documents (Results 1–100)
A cubic pure half-spinor approach to high performance photon-counting computerized X-ray tomography – transcendence of the Brauer mirror symmetry functor –. (English) Zbl 07930078
The enriched multinode Shepard collocation method for solving elliptic problems with singularities. (English) Zbl 07901897
Universal holomorphic maps with slow growth. I: An algorithm. (English) Zbl 07892667
Reviewer: Rafael B. Andrist (Ljubljana)
On Arestov’s inequalities concerning the Shur-Szegő composition of polynomials. (English) Zbl 07880169
On approximations of a singular integral on a segment by Fourier-Chebyshev’s rational integral operators. (Russian. English summary) Zbl 07878759
Reviewer: V. L. Leontiev (Sankt-Peterburg)
Positive matrix representations of rational positive real functions of several variables. (English) Zbl 07878152
Wiener-Hopf indices of unimodular functions on the unit circle, revisited. (English) Zbl 07874832
Reviewer: Adhemar Bultheel (Leuven)
Three open problems in function theoretic operator theory. (English) Zbl 07861157
Condori, Alberto A. (ed.) et al., Recent progress in function theory and operator theory. AMS special session, virtual, April 6, 2022. Providence, RI: American Mathematical Society (AMS). Contemp. Math. 799, 1-21 (2024).
On axially rational regular functions and Schur analysis in the Clifford-Appell setting. (English) Zbl 07849835
Reviewer: Adhemar Bultheel (Leuven)
Rational approximation of operator semigroups via the \(\mathcal{B}\)-calculus. (English) Zbl 07839420
Universality of free random variables: atoms for non-commutative rational functions. (English) Zbl 07829726
MSC:
47-XX
Fractional Zernike functions. (English) Zbl 1535.30012
Flow of the zeros of polynomials under iterated differentiation. arXiv:2408.13851
Preprint, arXiv:2408.13851 [math.CA] (2024).
Approximation in the mean on rational curves. (English) Zbl 07918439
Albrecht, Ernst (ed.) et al., Multivariable operator theory. The Jörg Eschmeier memorial volume. Cham: Birkhäuser. 219-227 (2023).
Cantor series expansions of rational numbers. (English) Zbl 07894545
Reviewer: Jaroslav Hančl (Ostrava)
Derivatives of meromorphic functions sharing polynomials with their difference operators. (English) Zbl 1540.39030
J. Contemp. Math. Anal., Armen. Acad. Sci. 58, No. 6, 444-458 (2023) and Izv. Nats. Akad. Nauk Armen., Mat. 58, No. 6, 66-82 (2023).
Reviewer: Ewa Ciechanowicz (Szczecin)
Representation theory and multilevel filters. (English) Zbl 1539.42040
Reviewer: Igor Novikov (Voronezh)
Analytic continuation of concrete realizations and the McCarthy Champagne conjecture. (English) Zbl 1528.46045
Exponent splitting schemes for evolution equations with fractional powers of operators. (English) Zbl 07709145
On the block functions generating the limit \(q\)-Lupaş operator. (English) Zbl 1542.41010
Reviewer: Tuğba Yurdakadim (Bilecik)
Discrete Wiener algebra in the bicomplex setting, spectral factorization with symmetry, and superoscillations. (English) Zbl 1516.30060
Operator noncommutative functions. (English) Zbl 07689472
Reviewer: Antonio M. Peralta (Granada)
Stability of matrix polynomials in one and several variables. (English) Zbl 1515.15012
Reviewer: Roksana Słowik (Gliwice)
Resummed heat-kernel and form factors for surface contributions: Dirichlet semitransparent boundary conditions. (English) Zbl 1519.81481
The non-tangential boundary behavior of the matrix-valued rational inner functions on bounded symmetric domain. (English) Zbl 1523.32034
Reviewer: David Békollè (Yaoundé)
Wiener-Hopf factorization indices of rational matrix functions with respect to the unit circle in terms of realization. (English) Zbl 1508.30007
Realizations of non-commutative rational functions around a matrix centre. II: The lost-abbey conditions. (English) Zbl 1521.16014
Reviewer: Wen-Fong Ke (Tainan)
New numerical radius inequalities for operator matrices and a bound for the zeros of polynomials. (English) Zbl 07630100
On the relation between Hurwitz stability of matrix polynomials and matrix-valued Stieltjes functions. (English) Zbl 1524.30015
Roots of polynomials under repeated differentiation and repeated applications of fractional differential operators. arXiv:2312.14883
Preprint, arXiv:2312.14883 [math.PR] (2023).
Polynomial and rational convergence rates for Laplace problems on planar domains. arXiv:2311.17718
Preprint, arXiv:2311.17718 [math.NA] (2023).
The K-theory of the C*-algebras associated to rational functions. arXiv:2307.13420
Preprint, arXiv:2307.13420 [math.KT] (2023).
Darlington’s Theorem for Rational Nevanlinna Functions in Several Variables. arXiv:2301.03851
Preprint, arXiv:2301.03851 [math.CV] (2023).
Inner functions of matrix argument and conjugacy classes in unitary groups. (English. Russian original) Zbl 1522.32003
Sb. Math. 213, No. 8, 1041-1057 (2022); translation from Mat. Sb. 213, No. 8, 26-43 (2022).
The rational interpolation problem: Grassmannian and Loewner-matrix approaches. (English) Zbl 1508.30073
Beattie, Christopher (ed.) et al., Realization and model reduction of dynamical systems. A festschrift in honor of the 70th birthday of Thanos Antoulas. Cham: Springer. 3-21 (2022).
An analysis of convexity and starlikeness attributes for Breaz integro-differential operator. (English) Zbl 1513.30033
Multiplication operator and average characteristic polynomial associated with exceptional Jacobi polynomials. (English) Zbl 1519.33007
Approximation in the mean on rational curves. (English) Zbl 1496.14059
Reviewer: Carlos Hermoso Ortíz (Madrid)
Minimal realizations and determinantal representations in the indefinite setting. (English) Zbl 1490.15014
Factorized schemes for first and second order evolution equations with fractional powers of operators. (English) Zbl 07516755
On transcendental directions of entire solutions of linear differential equations. (English) Zbl 1485.34211
Some methods for solving equations with an operator function and applications for problems with a fractional power of an operator. (English) Zbl 1524.65405
SOS Polynomials and Matrix Representations of Rational Real Functions. arXiv:2211.13946
Preprint, arXiv:2211.13946 [math.CV] (2022).
Theoretical error estimates for computing the matrix logarithm by Padé-type approximants. arXiv:2211.06206
Preprint, arXiv:2211.06206 [math.NA] (2022).
Adaptive approximation of nonlinear eigenproblems by minimal rational interpolation. arXiv:2209.13205
Preprint, arXiv:2209.13205 [math.NA] (2022).
Inner Functions on quotient domains related to the polydisc. arXiv:2208.07569
Preprint, arXiv:2208.07569 [math.FA] (2022).
Lee-Yang zeroes of the Curie-Weiss ferromagnet, unitary Hermite polynomials, and the backward heat flow. arXiv:2203.05533
Preprint, arXiv:2203.05533 [math.PR] (2022).
On a new subclass of Sakaguchi type functions using \((\mathfrak{p},\mathfrak{q})\)-derivative operator. (English) Zbl 1497.30006
Chadli, Ouayl (ed.) et al., Mathematical analysis and applications, MAA 2020. Selected papers based on the presentations at the conference, Jamshedpur, India, November 2–4, 2020. Singapore: Springer. Springer Proc. Math. Stat. 381, 273-280 (2021).
Analytical characteristic of spirallike functions defined by \(\gamma^{th}\) order differintegral type operator. (English) Zbl 1499.30027
Differential subordination and superordination for a new differential operator containing Mittag-Leffler function. (English) Zbl 1499.30081
A subclass of Noor-type harmonic \(p\)-valent functions based on hypergeometric functions. (English) Zbl 1499.30046
Kummert’s approach to realization on the bidisk. (English) Zbl 1521.47023
Reviewer: Łukasz Kosiński (Kraków)
Realizations of non-commutative rational functions around a matrix centre. I: synthesis, minimal realizations and evaluation on stably finite algebras. (English) Zbl 1494.16017
Reviewer: Adam Chapman (Tel Hai)
The convex invertible cone structure of positive real odd rational matrix functions. (English) Zbl 1489.30046
Reviewer: Gabriel Thomas (Grenoble)
Non-intrusive double-greedy parametric model reduction by interpolation of frequency-domain rational surrogates. (English) Zbl 1528.65117
Learned infinite elements. (English) Zbl 1477.65218
A physicist’s guide to explicit summation formulas involving zeros of Bessel functions and related spectral sums. (English) Zbl 1476.35102
On rational approximation to \({|x|^\alpha}\) (\(1 \le \alpha < 2\)) at the improved tangent nodes. (Chinese. English summary) Zbl 1488.41018
Applications of constructed new families of generating-type functions interpolating new and known classes of polynomials and numbers. (English) Zbl 1472.05010
Tau functions of \((n, 1)\) curves and soliton solutions on nonzero constant backgrounds. (English) Zbl 1480.37078
Reviewer: Arsen Melikyan (Brasília)
A short proof of the symmetric determinantal representation of polynomials. (English) Zbl 1472.32001
Reviewer: Mihai Putinar (Santa Barbara)
Schrödinger operators with reverse Hölder class potentials in the Dunkl setting and their Hardy spaces. (English) Zbl 1467.42032
Remarks on circulant matrices and critical points of polynomials. (English) Zbl 1486.15014
Reviewer: Marcel G. de Bruin (Heemstede)
Splitting schemes for non-stationary problems with a rational approximation for fractional powers of the operator. (English) Zbl 1475.65082
A rational approximation scheme for computing Mittag-Leffler function with discrete elliptic operator as input. (English) Zbl 1469.65037
The expansion of Wronskian Hermite polynomials in the Hermite basis. (English) Zbl 1470.26020
Reviewer: Armin Rainer (Wien)
Repeated differentiation and free unitary Poisson process. arXiv:2112.14729
Preprint, arXiv:2112.14729 [math.PR] (2021).
Rational Matrix-Valued Pick Functions of Several Variables. arXiv:2111.14216
Preprint, arXiv:2111.14216 [math.CV] (2021).
An extension of several essential numerical radius inequalities of \(2\times 2\) off-diagonal operator matrices. (English) Zbl 1491.47003
Local limit theorems for suspended semiflows. (English) Zbl 1456.37037
Reviewer: Thomas B. Ward (Leeds)
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