×

Found 153 Documents (Results 1–100)

On the modified Korteweg-de-Vries equation with loaded term. (English. Ukrainian original) Zbl 1504.35449

Ukr. Math. J. 73, No. 11, 1783-1809 (2022); translation from Ukr. Mat. Zh. 73, No. 11, 1541-1563 (2021).
PDFBibTeX XMLCite
Full Text: DOI

Asymptotic bounds for the solutions of functional and functional-differential equations with constant and linear delays. (English. Russian original) Zbl 1509.34063

Ukr. Math. J. 71, No. 9, 1429-1455 (2020); translation from Ukr. Mat. Zh. 71, No. 9, 1249-1270 (2019).
MSC:  34K06 34K25 39B22
PDFBibTeX XMLCite
Full Text: DOI

Asymptotic behavior of the solutions of a functional-differential equation with linearly transformed argument. (English. Russian original) Zbl 1482.34180

Ukr. Math. J. 72, No. 1, 78-97 (2020); translation from Ukr. Mat. Zh. 72, No. 1, 69-85 (2020).
MSC:  34K25
PDFBibTeX XMLCite
Full Text: DOI

Structural stability of matrix pencils and matrix pairs under contragredient equivalence. (English. Ukrainian original) Zbl 1439.15005

Ukr. Math. J. 71, No. 5, 808-811 (2019); translation from Ukr. Mat. Zh. 71, No. 5, 706-709 (2019).
MSC:  15A22 15A21 15A20
PDFBibTeX XMLCite
Full Text: DOI Link

Theory of multidimensional Delsarte-Lions transmutation operators. I. (English. Ukrainian original) Zbl 1442.58019

Ukr. Math. J. 70, No. 12, 1913-1952 (2019); translation from Ukr. Mat. Zh. 70, No. 12, 1660-1695 (2018).
MSC:  58J50 58-02 47B40
PDFBibTeX XMLCite
Full Text: DOI

Estimates for the entropy numbers of the classes \( {B}_{p,\theta}^{\Omega } \) of periodic multivariable functions in the uniform metric. (English. Ukrainian original) Zbl 1423.41040

Ukr. Math. J. 70, No. 9, 1439-1455 (2019); translation from Ukr. Mat. Zh. 70, No. 9, 1249-1263 (2018).
MSC:  41A46
PDFBibTeX XMLCite
Full Text: DOI

On the solvability of one system of nonlinear Hammerstein-type integral equations on the semiaxis. (English. Russian original) Zbl 1423.45003

Ukr. Math. J. 69, No. 8, 1287-1305 (2018); translation from Ukr. Mat. Zh. 69, No. 8, 1107-1122 (2017).
MSC:  45G10 45F05
PDFBibTeX XMLCite
Full Text: DOI

A new sufficient condition for belonging to the algebra of absolutely convergent Fourier integrals and its application to the problems of summability of double Fourier series. (English. Russian original) Zbl 1380.42009

Ukr. Math. J. 67, No. 8, 1219-1235 (2016); translation from Ukr. Mat. Zh. 67, No. 8, 1082-1096 (2015).
MSC:  42B10
PDFBibTeX XMLCite
Full Text: DOI

One problem connected with the Helgason support problem. (English. Russian original) Zbl 1404.43016

Ukr. Math. J. 67, No. 9, 1336-1348 (2016); translation from Ukr. Mat. Zh. 67, No. 9, 1189-1200 (2015).
PDFBibTeX XMLCite
Full Text: DOI

Order estimates for the best approximations and approximations by Fourier sums of the classes of \((\psi, \beta)\)-differential functions. (English. Ukrainian original) Zbl 1327.42003

Ukr. Math. J. 65, No. 9, 1319-1331 (2014); translation from Ukr. Mat. Zh. 65, No. 9, 1186-1197 (2013).
MSC:  42A10 42A16
PDFBibTeX XMLCite
Full Text: DOI arXiv

On the best approximation in the mean by algebraic polynomials with weight and the exact values of widths for the classes of functions. (English. Ukrainian original) Zbl 1309.41015

Ukr. Math. J. 65, No. 12, 1774-1792 (2014); translation from Ukr. Mat. Zh. 65, No. 12, 1604-1621 (2013).
MSC:  41A46
PDFBibTeX XMLCite
Full Text: DOI

Representations of algebras defined by a multiplicative relation and corresponding to the extended Dynkin graphs \(\tilde D_4\), \(\tilde E_6\), \(\tilde E_7\), and \(\tilde E_8\). (English. Ukrainian original) Zbl 1287.46042

Ukr. Math. J. 64, No. 12, 1865-1892 (2013); translation from Ukr. Mat. Zh. 64, No. 12, 1654-1675 (2012).
MSC:  46K10 46H35
PDFBibTeX XMLCite
Full Text: DOI

On equalities involving integrals of the logarithm of the Riemann \(\zeta\)-function and equivalent to the Riemann hypothesis. (English. Russian original) Zbl 1285.11109

Ukr. Math. J. 64, No. 2, 247-261 (2012); translation from Ukr. Mat. Zh. 64, No. 2, 218-228 (2012).
MSC:  11M06 11M26
PDFBibTeX XMLCite
Full Text: DOI arXiv Link

Scalar operators equal to the product of unitary roots of the identity operator. (English. Russian original) Zbl 1284.47019

Ukr. Math. J. 64, No. 6, 938-947 (2012); translation from Ukr. Mat. Zh. 64, No. 6, 819-825 (2012).
MSC:  47A68
PDFBibTeX XMLCite
Full Text: DOI

Rings with finite decomposition of identity. (English. Russian original) Zbl 1248.16018

Ukr. Math. J. 63, No. 3, 369-392 (2011); translation from Ukr. Mat. Zh. 63, No. 3, 319-340 (2011).
PDFBibTeX XMLCite
Full Text: DOI Link

On the construction of a nonnegative solution for one class of Urysohn-type nonlinear integral equations on a semiaxis. (English. Russian original) Zbl 1242.45005

Ukr. Math. J. 63, No. 1, 134-145 (2011); translation from Ukr. Mat. Zh. 63, No. 1, 110-118 (2011).
PDFBibTeX XMLCite
Full Text: DOI

Szegö-Kolmogorov-Krein theorems on weighted trigonometrical approximation and Cárleman-type relations. (English. Russian original) Zbl 0853.30021

Ukr. Math. J. 46, No. 1-2, 101-132 (1994); translation from Ukr. Mat. Zh. 46, No. 1-2, 100-127 (1994).
MSC:  30D55 30D50
PDFBibTeX XMLCite
Full Text: DOI

Qualitative analysis of families of bounded solutions of the nonlinear three-dimensional Schrödinger equation. (English. Russian original) Zbl 0727.35127

Ukr. Math. J. 42, No. 10, 1193-1198 (1990); translation from Ukr. Mat. Zh. 42, No. 10, 1344-1349 (1990).
MSC:  35Q55 35B40
PDFBibTeX XMLCite
Full Text: DOI

Criterion for the unique solvability of the Cauchy problem in the class \(C^{\infty}\) for differential equations with a polynomial transformation of the argument. (English. Russian original) Zbl 0703.34005

Ukr. Math. J. 41, No. 10, 1141-1146 (1989); translation from Ukr. Mat. Zh. 41, No. 10, 1327-1333 (1989).
MSC:  34A12
PDFBibTeX XMLCite
Full Text: DOI

Cardinality of open \(\sigma\)-compact sets in the space of noncompact subgroups of a topological group. (English. Russian original) Zbl 0723.22004

Ukr. Math. J. 40, No. 6, 679-683 (1988); translation from Ukr. Mat. Zh. 40, No. 6, 803-807 (1988).
PDFBibTeX XMLCite
Full Text: DOI

Filter Results by …

all top 5

Author

all top 5

Volume

all top 5

Year of Publication

all top 3

Main Field