## Found 485 Documents (Results 1–100)

100
MathJax

### Density of polynomials in certain weighted Dirichlet type spaces. (English)Zbl 07487514

MSC:  30H20 46E10 30B60
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### A generalized trigonometric moment problem in a weighted $$L^2(- \infty ,0)$$ space. (English)Zbl 1476.30136

MSC:  30E05 30B60
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### Invariant spaces of entire functions. (English. Russian original)Zbl 1483.46021

Math. Notes 109, No. 3, 413-426 (2021); translation from Mat. Zametki 109, No. 3, 380-396 (2021).
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### Two uniqueness theorems at work. (English)Zbl 1464.44001

MSC:  44A10 30B60
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### Distribution of zeros of exponential-type entire functions with constraints on growth along a line. (English. Russian original)Zbl 1451.30058

Math. Notes 108, No. 4, 579-589 (2020); translation from Mat. Zametki 108, No. 4, 588-600 (2020).
MSC:  30D15 30C15 30B60
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### Moment problems in weighted $$L^2$$ spaces on the real line. (English)Zbl 1451.30071

MSC:  30E05 30B60
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### A stability problem for some complete and minimal Gabor systems in $$L^2(\mathbb{R})$$. (English)Zbl 1443.30019

MSC:  30H20 30B60
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### Weighted-$$L^2$$ polynomial approximation in $$\mathbb{C}$$. (English)Zbl 1439.30007

MSC:  30B60 30E10 32W05
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### Clarkson-Erdős-Schwartz theorem on a closed sector. (Chinese. English summary)Zbl 07494723

MSC:  30B40 30B60 30E10
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### The basis property of a perturbed system of exponentials in Morrey-type spaces. (English. Russian original)Zbl 1422.30004

Sib. Math. J. 60, No. 2, 249-271 (2019); translation from Sib. Mat. Zh. 60, No. 2, 323-350 (2019).
MSC:  30B60 30H99 46E30
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### Asymptotically orthonormal basis and Toeplitz operators. (English)Zbl 1417.30005

MSC:  30B60 47B35
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### Completeness of perturbed systems of trigonometric functions. (English)Zbl 1402.30004

MSC:  30B60 33B10 33C10
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### The closed span of some exponential system in weighted Banach spaces on the real line and a moment problem. (English)Zbl 1424.30012

MSC:  30B60 30B50 46E15
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### Extremal problems in nonquasianalytic Carleman classes. Applications. (English. Russian original)Zbl 1401.30034

Sb. Math. 209, No. 7, 958-984 (2018); translation from Mat. Sb. 209, No. 7, 44-70 (2018).
MSC:  30D60 30B60
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MSC:  30B60
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### On one Leontiev-Levin theorem. (Russian. English summary)Zbl 1456.30049

Ufim. Mat. Zh. 9, No. 3, 89-101 (2017); translation in Ufa Math. J. 9, No. 3, 87-99 (2017).
MSC:  30D10 30B60
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### Complete biorthogonal systems of Bessel functions. (English)Zbl 1414.30006

MSC:  30B60 33C10 30D15
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### On completeness of root vectors of Schrödinger operators: a spectral approach. (English)Zbl 1412.35016

MSC:  35A99 30B60
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### Frame properties of a part of an exponential system with degenerate coefficients in Hardy classes. (English)Zbl 1376.30001

MSC:  30B60 42A65 46A35
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### Regularly distributed subsets in the complex plane. (English. Russian original)Zbl 1369.30028

St. Petersbg. Math. J. 28, No. 4, 433-464 (2017); translation from Algebra Anal. 28, No. 4, 1-46 (2016).
MSC:  30D20 30B60
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### On the principle of doubly symmetric Kaz’min sets. (English. Russian original)Zbl 1366.30003

Math. Notes 101, No. 1, 3-16 (2017); translation from Mat. Zametki 101, No. 1, 3-19 (2017).
MSC:  30B60
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### Common hypercyclic vectors for certain families of differential operators. (English)Zbl 1476.30017

MSC:  30B60 30D15 47A16
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### On the completeness of the function system $$\{ z^{\tau_n} \log^{s_n} z\}$$ with infinite multiplicity in non-Carathéodory region. (Chinese. English summary)Zbl 1374.30009

MSC:  30B60 30E10
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### Fundamental principle and a basis in invariant subspaces. (English. Russian original)Zbl 1353.30003

Math. Notes 99, No. 5, 685-696 (2016); translation from Mat. Zametki 99, No. 5, 684-697 (2016).
MSC:  30B60 30H99
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### Generalised cosine functions, basis and regularity properties. (English)Zbl 1344.30002

MSC:  30B60 33B10 46B15
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### Noncomplete systems of exponentials on arcs and Carleman nonquasianalytic classes. II. (English. Russian original)Zbl 1335.30002

St. Petersbg. Math. J. 27, No. 1, 33-50 (2016); translation from Algebra Anal. 27, No. 1, 49-73 (2015).
MSC:  30B60
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### On the equivalent bases of cosines in generalized Lebesgue spaces. (English)Zbl 1337.30002

MSC:  30B60 46A35

### A remark on basis property of systems of Bessel and Mittag-Leffler type functions. (English. Russian original)Zbl 1339.33011

J. Contemp. Math. Anal., Armen. Acad. Sci. 50, No. 6, 300-305 (2015); translation from Izv. Nats. Akad. Nauk Armen., Mat. 50, No. 6, 16-25 (2015).
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### Generalized Dirichlet classes in a half-plane and their application to approximations. (English. Russian original)Zbl 1320.30093

Sb. Math. 206, No. 1, 135-160 (2015); translation from Mat. Sb. 206, No. 1, 147-174 (2015).
MSC:  30H99 30B60
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### Complementability of exponential systems. (Complémentabilité des systèmes d’exponentielles.) (English. French summary)Zbl 1319.30024

MSC:  30E10 30B60
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### The multivariate Müntz-Szasz problem in weighted Banach space on $$\mathbb{R}^n$$. (English)Zbl 1470.30002

MSC:  30B60 41A10
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### Completeness of the system of entire nonnegative powers of analytic functions in $$A(D)$$. (English. Russian original)Zbl 1318.30006

Sib. Math. J. 55, No. 6, 984-994 (2014); translation from Sib. Mat. Zh. 55, No. 6, 1208-1220 (2014).
MSC:  30B60
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### On atomic decomposition for Hardy classes with respect to degenerate exponential systems. (English)Zbl 1304.30007

MSC:  30B60 42A65 30H10

### On frame properties of degenerate system of exponents in Hardy classes. (English)Zbl 1438.30010

MSC:  30B60 42A65 46A35
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### Ergodic universality theorems for the Riemann zeta-function and other $$L$$-functions. (English. French summary)Zbl 1283.11118

MSC:  11M06 11M41 37A45 30B60
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### Bi-orthogonal expansions in the space $$L^{2}(0,\infty)$$. (English)Zbl 1277.30021

Mashreghi, Javad (ed.) et al., Blaschke products and their applications. Proceedings based on the presentations at the conference, Toronto, Canada, July 25–29, 2011. New York, NY: Springer; Toronto: Fields Institute for Research in Mathematical Sciences (ISBN 978-1-4614-5340-6/hbk; 978-1-4614-5341-3/ebook). Fields Institute Communications 65, 99-112 (2013).
MSC:  30E10 30B60
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### Approximation of Müntz-Szász type in weighted spaces. (English)Zbl 1293.30008

Sb. Math. 204, No. 7, 1028-1055 (2013); translation from Mat. Sb. 204, No. 7, 97-126 (2013).
MSC:  30B60 46E15
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MSC:  30B60
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MSC:  30B60
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### 65 years since the paper “On the value of the best approximation of functions having a real singular point ” by I. I. Ibragimov. (English)Zbl 1267.30008

MSC:  30B60 46A35 42A65

### A generalization of the universality of power lacunary series. (English. Russian original)Zbl 1264.30002

Russ. Math. 56, No. 3, 1-5 (2012); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2012, No. 3, 3-8 (2012).
MSC:  30B10 30B60
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### Basicity of a system of exponents with a piecewise linear phase in variable spaces. (English)Zbl 1267.30007

MSC:  30B60 46A35
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### On the closure of complex exponential system in a weighted Banach space. (English)Zbl 1265.30009

MSC:  30B60 30B50
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### Riemann’s boundary value problem with degenerating coefficient and bases of exponents. (English)Zbl 1254.30053

MSC:  30E25 30B60
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### Minimality of a complex exponential system. (English)Zbl 1249.30009

MSC:  30B60 30B50 41A30
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### Exponential polynomial approximation with unrestricted upper density. (English)Zbl 1240.30188

MSC:  30E10 41A30 30B60
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### Incompleteness and minimality of an exponential system. (English)Zbl 1240.30184

MSC:  30E10 30B60 41A30
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### On the completeness of a system of analytic functions. (English. Russian original)Zbl 1253.30011

Math. Notes 89, No. 2, 171-183 (2011); translation from Mat. Zametki 89, No. 2, 163-177 (2011).
MSC:  30B60 30E05
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### The closed span of an exponential system in the Banach spaces $$L^p(\gamma, \beta)$$ and $$C[\gamma, \beta]$$. (English)Zbl 1243.30006

MSC:  30B60 30B50
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### Completeness of systems of derivatives of Airy functions and hypercyclic operators. (Russian. English summary)Zbl 1240.30124

Reviewer: Artyom N. Andronov
MSC:  30D15 30D20 30B60
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MSC:  30B60
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### Completeness of exponential systems in weighted spaces on the real axis. (Russian. English summary)Zbl 1240.30024

MSC:  30B60 30B50
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MSC:  30B60
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### Canonical products generated by perturbations of the sequence of integers, and their asymptotic estimation. (English. Russian original)Zbl 1203.30026

Izv. Math. 74, No. 5, 1083-1101 (2010); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 74, No. 5, 205-224 (2010).
MSC:  30D15 30E15 30B60
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### Completeness of the system $$\{f(\lambda_nz)\}$$ in $$L^2_\alpha[\Omega]$$. (English)Zbl 1230.30019

Mashreghi, Javad (ed.) et al., Hilbert spaces of analytic functions. Papers based on the workshop, CRM, Montréal, Canada, December 8–12, 2008. Providence, RI: American Mathematical Society (AMS) (ISBN 978-0-8218-4879-1/pbk). CRM Proceedings and Lecture Notes 51, 173-196 (2010).
MSC:  30E10 30B60

### On the completeness of the system $$\{t^{\lambda _n}\}$$ in $$C_{0}(E)$$. (English)Zbl 1201.30004

MSC:  30B60 42C30
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MSC:  30B60
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### On weighted approximation by lacunary polynomials on the rays emerging from the origin. (English)Zbl 1199.30026

MSC:  30B60 41A10
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### Completeness of complex exponential system in $$L^p_\alpha$$ space. (English)Zbl 1199.30025

MSC:  30B60 30E10
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### On mean approximation by polynomials with gaps on Carathéodory sets. (English. Russian original)Zbl 1176.30009

J. Contemp. Math. Anal., Armen. Acad. Sci. 43, No. 6, 372-376 (2008); translation from Izv. Nats. Akad. Nauk Armen., Mat. 43, No. 6, 82-88 (2008).
MSC:  30B60
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MSC:  30B60

### Approximation of the Müntz-Szász type in weight spaces $$L^p$$ and zeroes of functions of Bergman classes in a half-plane. (English. Russian original)Zbl 1162.30007

Russ. Math. 52, No. 5, 80-87 (2008); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2008, No. 5, 92-100 (2008).
MSC:  30B60
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### On the stability of the uniform minimality of a set of exponentials. (English. Russian original)Zbl 1162.30006

J. Math. Sci., New York 155, No. 1, 170-182 (2008); translation from Sovrem. Mat., Fundam. Napravl. 25, 165-177 (2007).
MSC:  30B60
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### On the dependence of uniform polyanalytic polynomial approximations on the order of polyanalyticity. (English)Zbl 1175.30004

Math. Notes 83, No. 1, 31-36 (2008); translation from Mat. Zametki 83, No. 1, 32-38 (2008).
MSC:  30B60 30C10
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### Müntz-type theorem on the segments emerging from the origin. (English)Zbl 1142.30001

MSC:  30B60 41A17
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### Incompleteness and closure of the multiplicity system $$\{t^ke^\lambda j^t\}$$ in the weighted Banach space. (English)Zbl 1162.30005

MSC:  30B60 30E10
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### On Riemann problem in variable summability index Hardy classes and completeness of a system of exponents. (English)Zbl 1161.30326

MSC:  30D55 30B60 46E30

### Hausdorff-Young type theorem for unitary systems with measurable coefficients. (English)Zbl 1161.42308

MSC:  42C10 30B60

### Completeness of the system of exponentials in a space with weight $$\exp x^{2}$$. (English. Russian original)Zbl 1259.30003

Dokl. Math. 76, No. 1, 580-582 (2007); translation from Dokl. Akad. Nauk, Ross. Akad. Nauk 415, No. 4, 455-457 (2007).
MSC:  30B60 42A63 44A10
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### Completeness of a sines type type system with degeneration. (English)Zbl 1218.42002

MSC:  42A32 30B60 46E15

### The absence of unconditional bases of exponentials in Bergman spaces on non-polygonal domains. (English. Russian original)Zbl 1148.30029

Izv. Math. 71, No. 6, 1145-1166 (2007); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 71, No. 6, 69-90 (2007).
MSC:  30H05 46E20 30B60
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### Completeness and basis properties of systems of exponentials in weighted spaces $$L^{p}(-\pi,\pi)$$. (English. Russian original)Zbl 1155.30001

Math. Notes 81, No. 5, 695-707 (2007); translation from Mat. Zametki 81, No. 5, 776-788 (2007).
MSC:  30B60
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### Growth of some analytic function in the right half-plane. (Chinese. English summary)Zbl 1174.30308

MSC:  30B60 41A30

### Smooth univalent universal functions. (English)Zbl 1147.30004

MSC:  30B60 30B30 30C55
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### Sparse exponential systems: completeness with estimates. (English)Zbl 1128.42016

MSC:  42C30 30B60
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