Acar, Tuncer; Draganov, Borislav R. A strong converse inequality for generalized sampling operators. (English) Zbl 07517130 Ann. Funct. Anal. 13, No. 3, Paper No. 36, 16 p. (2022). MSC: 41A17 41A25 41A27 41A35 41A40 94A20 PDF BibTeX XML Cite \textit{T. Acar} and \textit{B. R. Draganov}, Ann. Funct. Anal. 13, No. 3, Paper No. 36, 16 p. (2022; Zbl 07517130) Full Text: DOI OpenURL
Cao, Manxia; Huang, Wei Sparse phase retrieval via \(\ell_p(0<p\leq 1)\) minimization. (English) Zbl 07492592 Int. J. Wavelets Multiresolut. Inf. Process. 20, No. 1, Article ID 2150034, 13 p. (2022). MSC: 41A27 42A50 65K10 94A12 PDF BibTeX XML Cite \textit{M. Cao} and \textit{W. Huang}, Int. J. Wavelets Multiresolut. Inf. Process. 20, No. 1, Article ID 2150034, 13 p. (2022; Zbl 07492592) Full Text: DOI OpenURL
Qian, Yunyou; Yu, Dansheng Rates of approximation by neural network interpolation operators. (English) Zbl 07465252 Appl. Math. Comput. 418, Article ID 126781, 18 p. (2022). MSC: 41A25 41A05 41A27 41A28 PDF BibTeX XML Cite \textit{Y. Qian} and \textit{D. Yu}, Appl. Math. Comput. 418, Article ID 126781, 18 p. (2022; Zbl 07465252) Full Text: DOI OpenURL
Xie, Linsen; Wang, Shuli Strong converse inequality for linear combinations of Szász-Mirakjan operators. (English) Zbl 07436518 J. Approx. Theory 273, Article ID 105651, 12 p. (2022). Reviewer: Vijay Gupta (New Delhi) MSC: 41A17 41A27 PDF BibTeX XML Cite \textit{L. Xie} and \textit{S. Wang}, J. Approx. Theory 273, Article ID 105651, 12 p. (2022; Zbl 07436518) Full Text: DOI OpenURL
Jafarov, Sadulla Z. Converse theorem of the approximation theory of functions in Morrey-Smirnov classes related to the derivatives of functions. (English) Zbl 1483.41008 Proc. Inst. Math. Mech., Natl. Acad. Sci. Azerb. 47, No. 2, 205-214 (2021). MSC: 41A27 26D15 41A20 41A25 41A28 42A10 46E30 PDF BibTeX XML Cite \textit{S. Z. Jafarov}, Proc. Inst. Math. Mech., Natl. Acad. Sci. Azerb. 47, No. 2, 205--214 (2021; Zbl 1483.41008) Full Text: DOI OpenURL
Liu, Keji Fast imaging of sources and scatterers in a stratified ocean waveguide. (English) Zbl 07430592 SIAM J. Imaging Sci. 14, No. 1, 224-245 (2021). MSC: 65-XX 35R30 41A27 76Q05 PDF BibTeX XML Cite \textit{K. Liu}, SIAM J. Imaging Sci. 14, No. 1, 224--245 (2021; Zbl 07430592) Full Text: DOI OpenURL
Kolomoitsev, Yurii; Prestin, Jürgen Approximation properties of periodic multivariate quasi-interpolation operators. (English) Zbl 1475.41008 J. Approx. Theory 270, Article ID 105631, 24 p. (2021). Reviewer: Martin D. Buhmann (Gießen) MSC: 41A35 41A25 41A27 42A10 42A15 PDF BibTeX XML Cite \textit{Y. Kolomoitsev} and \textit{J. Prestin}, J. Approx. Theory 270, Article ID 105631, 24 p. (2021; Zbl 1475.41008) Full Text: DOI arXiv OpenURL
Han, L.-X.; Guo, B.-N. Direct, inverse, and equivalence theorems for weighted Szász-Durrmeyer-Bézier operators in Orlicz spaces. (English) Zbl 07393070 Anal. Math. 47, No. 3, 569-592 (2021). Reviewer: Antonio López-Carmona (Granada) MSC: 41A35 41A17 41A27 PDF BibTeX XML Cite \textit{L. X. Han} and \textit{B. N. Guo}, Anal. Math. 47, No. 3, 569--592 (2021; Zbl 07393070) Full Text: DOI OpenURL
Lasuriya, R. A. Inverse approximation theorems in the spaces \(S^{(p,q)}(\sigma^{m-1})\). (English. Russian original) Zbl 1478.41003 Math. Notes 110, No. 1, 80-91 (2021); translation from Mat. Zametki 110, No. 1, 75-89 (2021). Reviewer: Francisco Pérez Acosta (La Laguna) MSC: 41A27 42C10 PDF BibTeX XML Cite \textit{R. A. Lasuriya}, Math. Notes 110, No. 1, 80--91 (2021; Zbl 1478.41003); translation from Mat. Zametki 110, No. 1, 75--89 (2021) Full Text: DOI OpenURL
Abdullayev, Fahreddin; Chaichenko, Stanislav; Shidlich, Andrii Direct and inverse approximation theorems of functions in the Musielak-Orlicz type spaces. (English) Zbl 1466.41008 Math. Inequal. Appl. 24, No. 2, 323-336 (2021). MSC: 41A27 41A44 42A16 PDF BibTeX XML Cite \textit{F. Abdullayev} et al., Math. Inequal. Appl. 24, No. 2, 323--336 (2021; Zbl 1466.41008) Full Text: DOI arXiv OpenURL
Wu, Cong; Wang, Jinru; Zeng, Xiaochen A pointwise lower bound for generalized deconvolution density estimation. (English) Zbl 1467.62058 Appl. Anal. 100, No. 8, 1806-1815 (2021). MSC: 62G07 42C40 41A25 41A27 PDF BibTeX XML Cite \textit{C. Wu} et al., Appl. Anal. 100, No. 8, 1806--1815 (2021; Zbl 1467.62058) Full Text: DOI OpenURL
Akgün, Ramazan Fractional order mixed difference operator and its applications in angular approximation. (English) Zbl 07421897 Hacet. J. Math. Stat. 49, No. 5, 1594-1610 (2020). MSC: 42A10 41A17 41A27 41A28 PDF BibTeX XML Cite \textit{R. Akgün}, Hacet. J. Math. Stat. 49, No. 5, 1594--1610 (2020; Zbl 07421897) Full Text: DOI OpenURL
Parvanov, P. E. Weighted approximation of functions in \(L_p\)-norm by Baskakov-Kantorovich operator. (English) Zbl 1474.41082 Anal. Math. 46, No. 4, 821-842 (2020). Reviewer: Włodzimierz Łenski (Poznań) MSC: 41A81 41A17 41A27 41A25 41A36 PDF BibTeX XML Cite \textit{P. E. Parvanov}, Anal. Math. 46, No. 4, 821--842 (2020; Zbl 1474.41082) Full Text: DOI OpenURL
Gadjev, Ivan; Uluchev, Rumen Strong converse result for weighted approximation by Baskakov-Kantorovich operator. (English) Zbl 1460.41013 Draganov, Borislav (ed.) et al., Constructive theory of functions. Proceedings of the 13th international conference, Sozopol, Bulgaria, June 2–8, 2019. Dedicated to the memory of Blagovest Sendov. Sofia: Prof. Marin Drinov Academic Publishing House. 53-71 (2020). MSC: 41A36 41A25 41A27 41A17 PDF BibTeX XML Cite \textit{I. Gadjev} and \textit{R. Uluchev}, in: Constructive theory of functions. Proceedings of the 13th international conference, Sozopol, Bulgaria, June 2--8, 2019. Dedicated to the memory of Blagovest Sendov. Sofia: Prof. Marin Drinov Academic Publishing House. 53--71 (2020; Zbl 1460.41013) Full Text: Link OpenURL
Draganov, Borislav R. Converse estimates for the simultaneous approximation by Bernstein polynomials with integer coeffcients. (English) Zbl 1460.41009 Draganov, Borislav (ed.) et al., Constructive theory of functions. Proceedings of the 13th international conference, Sozopol, Bulgaria, June 2–8, 2019. Dedicated to the memory of Blagovest Sendov. Sofia: Prof. Marin Drinov Academic Publishing House. 39-51 (2020). MSC: 41A27 41A10 41A25 41A28 PDF BibTeX XML Cite \textit{B. R. Draganov}, in: Constructive theory of functions. Proceedings of the 13th international conference, Sozopol, Bulgaria, June 2--8, 2019. Dedicated to the memory of Blagovest Sendov. Sofia: Prof. Marin Drinov Academic Publishing House. 39--51 (2020; Zbl 1460.41009) Full Text: arXiv Link OpenURL
Bustamante, Jorge; Flores-de-Jesús, Lázaro Strong converse inequalities and quantitative Voronovskaya-type theorems for trigonometric Fejér sums. (English) Zbl 1463.42002 Constr. Math. Anal. 3, No. 2, 53-63 (2020). MSC: 42A10 42A20 41A25 41A27 PDF BibTeX XML Cite \textit{J. Bustamante} and \textit{L. Flores-de-Jesús}, Constr. Math. Anal. 3, No. 2, 53--63 (2020; Zbl 1463.42002) Full Text: DOI OpenURL
Abdullayev, Fahreddin; Chaichenko, Stanislav; Imash Kyzy, Meerim; Shidlich, Andrii Direct and inverse approximation theorems in the weighted Orlicz-type spaces with a variable exponent. (English) Zbl 1448.41013 Turk. J. Math. 44, No. 1, 284-299 (2020). MSC: 41A27 42A05 42A16 PDF BibTeX XML Cite \textit{F. Abdullayev} et al., Turk. J. Math. 44, No. 1, 284--299 (2020; Zbl 1448.41013) Full Text: arXiv Link OpenURL
Bustamante, Jorge Direct and strong converse inequalities for approximation with Fejér means. (English) Zbl 1443.42001 Demonstr. Math. 53, 80-85 (2020). MSC: 42A10 42A20 41A25 41A27 41A17 PDF BibTeX XML Cite \textit{J. Bustamante}, Demonstr. Math. 53, 80--85 (2020; Zbl 1443.42001) Full Text: DOI OpenURL
Artamonov, S.; Runovski, K. V.; Schmeisser, H.-J. Approximation by families of generalized sampling series, realizations of generalized \(\mathcal{K} \)-functionals and generalized moduli of smoothness. (English) Zbl 1442.41004 J. Math. Anal. Appl. 489, No. 1, Article ID 124138, 18 p. (2020). Reviewer: Zoltán Finta (Cluj-Napoca) MSC: 41A17 41A25 41A27 41A35 PDF BibTeX XML Cite \textit{S. Artamonov} et al., J. Math. Anal. Appl. 489, No. 1, Article ID 124138, 18 p. (2020; Zbl 1442.41004) Full Text: DOI OpenURL
Kumar, A. Sathish; Shivam, Bajpeyi Inverse approximation and GBS of bivariate Kantorovich type sampling series. (English) Zbl 1434.41007 Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 114, No. 2, Paper No. 82, 15 p. (2020). MSC: 41A27 94A20 41A30 41A10 PDF BibTeX XML Cite \textit{A. S. Kumar} and \textit{B. Shivam}, Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 114, No. 2, Paper No. 82, 15 p. (2020; Zbl 1434.41007) Full Text: DOI arXiv OpenURL
Alexeeva, Tatyana A.; Shirokov, Nikolay A. Constructive description of Hölder-like classes on an arc in \(\mathbb{R}^3\) by means of harmonic functions. (English) Zbl 1429.41014 J. Approx. Theory 249, Article ID 105308, 19 p. (2020). Reviewer: Sergei S. Platonov (Petrozavodsk) MSC: 41A30 41A27 PDF BibTeX XML Cite \textit{T. A. Alexeeva} and \textit{N. A. Shirokov}, J. Approx. Theory 249, Article ID 105308, 19 p. (2020; Zbl 1429.41014) Full Text: DOI arXiv OpenURL
Han, Ling-Xiong; Guo, Bai-Ni; Qi, Feng Equivalent theorem of approximation by linear combination of weighted Baskakov-Kantorovich operators in Orlicz spaces. (English) Zbl 07459251 J. Inequal. Appl. 2019, Paper No. 223, 18 p. (2019). MSC: 41A17 41A27 41A35 PDF BibTeX XML Cite \textit{L.-X. Han} et al., J. Inequal. Appl. 2019, Paper No. 223, 18 p. (2019; Zbl 07459251) Full Text: DOI OpenURL
Liu, Keji Direct imaging of inhomogeneous obstacles in a three-layered ocean waveguide. (English) Zbl 07418034 Commun. Comput. Phys. 26, No. 3, 700-718 (2019). MSC: 65-XX 35R30 41A27 76Q05 PDF BibTeX XML Cite \textit{K. Liu}, Commun. Comput. Phys. 26, No. 3, 700--718 (2019; Zbl 07418034) Full Text: DOI OpenURL
Chaichenko, Stanislav; Shidlich, Andrii; Abdullayev, Fahreddin Direct and inverse approximation theorems of functions in the Orlicz type spaces \(\mathcal{S}_{_{\scriptstyle M}}\). (English) Zbl 07289606 Math. Slovaca 69, No. 6, 1367-1380 (2019). MSC: 41A27 PDF BibTeX XML Cite \textit{S. Chaichenko} et al., Math. Slovaca 69, No. 6, 1367--1380 (2019; Zbl 07289606) Full Text: DOI arXiv OpenURL
Gorbachev, D. V.; Ivanov, V. I. Fractional smoothness in \(L^p\) with Dunkl weight and its applications. (English) Zbl 1435.42007 Math. Notes 106, No. 4, 537-561 (2019). Reviewer: Marcel G. de Bruin (Heemstede) MSC: 42B10 47B38 33C45 33C52 26A15 41A17 41A27 46E30 46E35 PDF BibTeX XML Cite \textit{D. V. Gorbachev} and \textit{V. I. Ivanov}, Math. Notes 106, No. 4, 537--561 (2019; Zbl 1435.42007) Full Text: DOI arXiv OpenURL
Sande, Espen; Manni, Carla; Speleers, Hendrik Sharp error estimates for spline approximation: explicit constants, \(n\)-widths, and eigenfunction convergence. (English) Zbl 1428.41010 Math. Models Methods Appl. Sci. 29, No. 6, 1175-1205 (2019). MSC: 41A15 41A27 41A44 65D07 PDF BibTeX XML Cite \textit{E. Sande} et al., Math. Models Methods Appl. Sci. 29, No. 6, 1175--1205 (2019; Zbl 1428.41010) Full Text: DOI arXiv OpenURL
Gadjev, I. A direct theorem for MKZ-Kantorovich operator. (English) Zbl 1438.41033 Anal. Math. 45, No. 1, 25-38 (2019). Reviewer: Ioan Raşa (Cluj-Napoca) MSC: 41A36 41A17 41A25 41A27 PDF BibTeX XML Cite \textit{I. Gadjev}, Anal. Math. 45, No. 1, 25--38 (2019; Zbl 1438.41033) Full Text: DOI OpenURL
Bosuwan, N. Direct and inverse results on row sequences of generalized Padé approximants to polynomial expansions. (English) Zbl 1438.30163 Acta Math. Hung. 157, No. 1, 191-219 (2019). Reviewer: Konstantin Malyutin (Sumy) MSC: 30E10 41A21 41A25 41A27 PDF BibTeX XML Cite \textit{N. Bosuwan}, Acta Math. Hung. 157, No. 1, 191--219 (2019; Zbl 1438.30163) Full Text: DOI OpenURL
Bosuwan, Nattapong; López Lagomasino, Guillermo Direct and inverse results on row sequences of simultaneous Padé-Faber approximants. (English) Zbl 1417.30029 Mediterr. J. Math. 16, No. 2, Paper No. 36, 21 p. (2019). MSC: 30E10 41A21 41A28 41A25 41A27 PDF BibTeX XML Cite \textit{N. Bosuwan} and \textit{G. López Lagomasino}, Mediterr. J. Math. 16, No. 2, Paper No. 36, 21 p. (2019; Zbl 1417.30029) Full Text: DOI arXiv OpenURL
Bosuwan, Nattapong On the boundedness of poles of generalized Padé approximants. (English) Zbl 1459.30005 Adv. Difference Equ. 2019, Paper No. 137, 11 p. (2019). MSC: 30E10 41A21 41A27 39A45 PDF BibTeX XML Cite \textit{N. Bosuwan}, Adv. Difference Equ. 2019, Paper No. 137, 11 p. (2019; Zbl 1459.30005) Full Text: DOI OpenURL
Draganov, Borislav R.; Gadjev, Ivan Approximation of functions by the Szász-Mirakjan-Kantorovich operator. (English) Zbl 1411.41017 Numer. Funct. Anal. Optim. 40, No. 7, 803-824 (2019). MSC: 41A36 41A17 41A25 41A27 PDF BibTeX XML Cite \textit{B. R. Draganov} and \textit{I. Gadjev}, Numer. Funct. Anal. Optim. 40, No. 7, 803--824 (2019; Zbl 1411.41017) Full Text: DOI OpenURL
Akgün, Ramazan Mixed modulus of smoothness with Muckenhoupt weights and approximation by angle. (English) Zbl 1405.42002 Complex Var. Elliptic Equ. 64, No. 2, 330-351 (2019). MSC: 42A10 41A17 41A27 41A28 PDF BibTeX XML Cite \textit{R. Akgün}, Complex Var. Elliptic Equ. 64, No. 2, 330--351 (2019; Zbl 1405.42002) Full Text: DOI OpenURL
Kopotun, K. A.; Leviatan, D.; Shevchuk, I. A. On weighted approximation with Jacobi weights. (English) Zbl 1401.41007 J. Approx. Theory 237, 96-112 (2019). Reviewer: Klaus Schiefermayr (Wels) MSC: 41A10 41A27 PDF BibTeX XML Cite \textit{K. A. Kopotun} et al., J. Approx. Theory 237, 96--112 (2019; Zbl 1401.41007) Full Text: DOI arXiv OpenURL
Draganov, Borislav Strong converse inequalities for the weighted multivariate Bernstein-Durrmeyer operator on the simplex via multipliers. (English) Zbl 1474.41031 God. Sofiĭ. Univ., Fak. Mat. Inform. 105, 55-73 (2018). MSC: 41A27 41A36 PDF BibTeX XML Cite \textit{B. Draganov}, God. Sofiĭ. Univ., Fak. Mat. Inform. 105, 55--73 (2018; Zbl 1474.41031) Full Text: arXiv Link OpenURL
Gadjev, Ivan Approximation of functions by some exponential-type operators. (English) Zbl 1445.41013 Ivanov, Kamen (ed.) et al., Constructive theory of functions. Proceedings of the 12th international conference, Sozopol, Bulgaria, June 11–17, 2016. Sofia: Prof. Marin Drinov Academic Publishing House. 143-158 (2018). MSC: 41A36 41A17 41A25 41A27 PDF BibTeX XML Cite \textit{I. Gadjev}, in: Constructive theory of functions. Proceedings of the 12th international conference, Sozopol, Bulgaria, June 11--17, 2016. Sofia: Prof. Marin Drinov Academic Publishing House. 143--158 (2018; Zbl 1445.41013) Full Text: Link OpenURL
Draganov, Borislav R. An exact strong converse inequality for the weighted simultaneous approximation by the Bernstein operator. (English) Zbl 1445.41011 Ivanov, Kamen (ed.) et al., Constructive theory of functions. Proceedings of the 12th international conference, Sozopol, Bulgaria, June 11–17, 2016. Sofia: Prof. Marin Drinov Academic Publishing House. 75-97 (2018). MSC: 41A36 41A17 41A27 41A28 PDF BibTeX XML Cite \textit{B. R. Draganov}, in: Constructive theory of functions. Proceedings of the 12th international conference, Sozopol, Bulgaria, June 11--17, 2016. Sofia: Prof. Marin Drinov Academic Publishing House. 75--97 (2018; Zbl 1445.41011) Full Text: Link OpenURL
Han, Lingxiong; Wu, Garidi Equivalent theorems of approximation by weighted Szasz-Kantorovich-Bezier operators in Orlicz spaces. (English) Zbl 1424.41030 Adv. Math., Beijing 47, No. 5, 719-734 (2018). MSC: 41A35 41A17 41A27 PDF BibTeX XML Cite \textit{L. Han} and \textit{G. Wu}, Adv. Math., Beijing 47, No. 5, 719--734 (2018; Zbl 1424.41030) Full Text: DOI OpenURL
Akgün, Ramazan; Yildirir, Yunus Emre Convolution and Jackson inequalities in Musielak-Orlicz spaces. (English) Zbl 1424.42003 Turk. J. Math. 42, No. 5, 2166-2185 (2018). MSC: 42A10 41A25 41A27 PDF BibTeX XML Cite \textit{R. Akgün} and \textit{Y. E. Yildirir}, Turk. J. Math. 42, No. 5, 2166--2185 (2018; Zbl 1424.42003) Full Text: DOI OpenURL
Akgün, Ramazan Gadjieva’s conjecture, \(K\)-functionals, and some applications in weighted Lebesgue spaces. (English) Zbl 1424.46042 Turk. J. Math. 42, No. 3, 1484-1503 (2018). MSC: 46E30 42A10 41A17 41A20 41A25 41A27 PDF BibTeX XML Cite \textit{R. Akgün}, Turk. J. Math. 42, No. 3, 1484--1503 (2018; Zbl 1424.46042) Full Text: DOI OpenURL
Israfilov, D. M.; Testici, A. Some inverse and simultaneous approximation theorems in weighted variable exponent Lebesgue spaces. (English) Zbl 1438.41021 Anal. Math. 44, No. 4, 475-492 (2018). MSC: 41A27 42A10 PDF BibTeX XML Cite \textit{D. M. Israfilov} and \textit{A. Testici}, Anal. Math. 44, No. 4, 475--492 (2018; Zbl 1438.41021) Full Text: DOI OpenURL
Hangelbroek, Thomas; Narcowich, Francis J.; Rieger, Christian; Ward, Joseph D. Direct and inverse results on bounded domains for meshless methods via localized bases on manifolds. (English) Zbl 1405.41009 Dick, Josef (ed.) et al., Contemporary computational mathematics – a celebration of the 80th birthday of Ian Sloan. In 2 volumes. Cham: Springer (ISBN 978-3-319-72455-3/hbk; 978-3-319-72456-0/ebook). 517-543 (2018). MSC: 41A27 41A17 53C20 PDF BibTeX XML Cite \textit{T. Hangelbroek} et al., in: Contemporary computational mathematics -- a celebration of the 80th birthday of Ian Sloan. In 2 volumes. Cham: Springer. 517--543 (2018; Zbl 1405.41009) Full Text: DOI arXiv OpenURL
Gao, Ya; Wu, Garidi Approximation of Lupas-Baskakov operators strong converse inequality in Orlicz space. (Chinese. English summary) Zbl 1413.41010 Acta Anal. Funct. Appl. 20, No. 1, 47-54 (2018). MSC: 41A35 41A17 41A27 PDF BibTeX XML Cite \textit{Y. Gao} and \textit{G. Wu}, Acta Anal. Funct. Appl. 20, No. 1, 47--54 (2018; Zbl 1413.41010) Full Text: DOI OpenURL
Doğu, Ali; Avşar, Ahmet Hamdi; Yildirir, Yunus Emre Some inequalities about convolution and trigonometric approximation in weighted Orlicz spaces. (English) Zbl 1471.42004 Proc. Inst. Math. Mech., Natl. Acad. Sci. Azerb. 44, No. 1, 107-115 (2018). MSC: 42A10 41A50 41A25 41A27 42B35 PDF BibTeX XML Cite \textit{A. Doğu} et al., Proc. Inst. Math. Mech., Natl. Acad. Sci. Azerb. 44, No. 1, 107--115 (2018; Zbl 1471.42004) OpenURL
Jafarov, Sadulla Z. Approximation of functions belonging to the weighted \(L(\alpha,M,\omega)\)-class by trigonometric polynomials. (English) Zbl 1394.41005 N. Z. J. Math. 48, 11-23 (2018). MSC: 41A17 41A25 41A27 42A10 42A50 46E30 46E35 26A33 PDF BibTeX XML Cite \textit{S. Z. Jafarov}, N. Z. J. Math. 48, 11--23 (2018; Zbl 1394.41005) Full Text: Link OpenURL
Kamoun, Lotfi; Selmi, Rim Harmonic analysis associated with the multivariate Laguerre function. (English) Zbl 1394.43002 Mediterr. J. Math. 15, No. 2, Paper No. 39, 20 p. (2018). Reviewer: Krzysztof Stempak (Wrocław) MSC: 43A62 41A27 42B10 44A05 44A35 PDF BibTeX XML Cite \textit{L. Kamoun} and \textit{R. Selmi}, Mediterr. J. Math. 15, No. 2, Paper No. 39, 20 p. (2018; Zbl 1394.43002) Full Text: DOI OpenURL
Bosuwan, N.; López Lagomasino, G. Determining system poles using row sequences of orthogonal Hermite-Padé approximants. (English) Zbl 1392.41010 J. Approx. Theory 231, 15-40 (2018). Reviewer: Marcel G. de Bruin (Heemstede) MSC: 41A21 41A28 41A25 41A27 30E10 PDF BibTeX XML Cite \textit{N. Bosuwan} and \textit{G. López Lagomasino}, J. Approx. Theory 231, 15--40 (2018; Zbl 1392.41010) Full Text: DOI arXiv OpenURL
Hangelbroek, T.; Narcowich, F. J.; Rieger, C.; Ward, J. D. An inverse theorem for compact Lipschitz regions in \(\mathbb {R}^d\) using localized kernel bases. (English) Zbl 1392.41009 Math. Comput. 87, No. 312, 1949-1989 (2018). Reviewer: Francisco Pérez Acosta (La Laguna) MSC: 41A17 41A27 41A63 PDF BibTeX XML Cite \textit{T. Hangelbroek} et al., Math. Comput. 87, No. 312, 1949--1989 (2018; Zbl 1392.41009) Full Text: DOI arXiv OpenURL
Liu, Keji; Xu, Yongzhi; Zou, Jun Direct recovery of wave-penetrable scatterers in a stratified ocean waveguide. (English) Zbl 1384.35145 J. Comput. Appl. Math. 338, 239-257 (2018). MSC: 35R30 35Q35 41A27 76Q05 35Q86 PDF BibTeX XML Cite \textit{K. Liu} et al., J. Comput. Appl. Math. 338, 239--257 (2018; Zbl 1384.35145) Full Text: DOI OpenURL
Draganov, Borislav R.; Gadjev, Ivan Direct and converse Voronovskaya estimates for the Bernstein operator. (English) Zbl 1390.41021 Result. Math. 73, No. 1, Paper No. 11, 21 p. (2018). MSC: 41A25 41A10 41A17 41A27 41A35 41A40 PDF BibTeX XML Cite \textit{B. R. Draganov} and \textit{I. Gadjev}, Result. Math. 73, No. 1, Paper No. 11, 21 p. (2018; Zbl 1390.41021) Full Text: DOI OpenURL
Nagler, Johannes; Kähler, Uwe Detection of \(C^{2}\)-singularities using uniform spline approximations. (English) Zbl 1381.41009 Math. Methods Appl. Sci. 41, No. 1, 303-316 (2018). MSC: 41A15 41A27 41A36 41A40 PDF BibTeX XML Cite \textit{J. Nagler} and \textit{U. Kähler}, Math. Methods Appl. Sci. 41, No. 1, 303--316 (2018; Zbl 1381.41009) Full Text: DOI OpenURL
Maslyuchenko, V. K.; Voloshyn, H. A. The analogue of Bernstein’s inverse theorem for the one class of the space of sequences. (Ukrainian. English summary) Zbl 1421.46005 Mat. Stud. 47, No. 2, 160-168 (2017). MSC: 46A45 41A27 PDF BibTeX XML Cite \textit{V. K. Maslyuchenko} and \textit{H. A. Voloshyn}, Mat. Stud. 47, No. 2, 160--168 (2017; Zbl 1421.46005) Full Text: DOI OpenURL
Han, Lingxiong; Wu, Garidi; Gao, Huishuang Approximation by Bernstein-Durrmeyer quasi-interpolants in Orlicz spaces. (Chinese. English summary) Zbl 1399.41005 J. Math., Wuhan Univ. 37, No. 3, 488-496 (2017). MSC: 41A05 41A27 41A35 41A65 PDF BibTeX XML Cite \textit{L. Han} et al., J. Math., Wuhan Univ. 37, No. 3, 488--496 (2017; Zbl 1399.41005) Full Text: DOI OpenURL
Silvanovich, O. V.; Shirokov, N. A. Approximation by entire functions on countable unions of segments of the real axis. II: Proof of the main theorem. (English. Russian original) Zbl 1382.41007 Vestn. St. Petersbg. Univ., Math. 50, No. 1, 35-43 (2017); translation from Vestn. St-Peterbg. Univ., Ser. I, Mat. Mekh. Astron. 62, No. 1, 53-63 (2017). MSC: 41A10 30E10 41A27 PDF BibTeX XML Cite \textit{O. V. Silvanovich} and \textit{N. A. Shirokov}, Vestn. St. Petersbg. Univ., Math. 50, No. 1, 35--43 (2017; Zbl 1382.41007); translation from Vestn. St-Peterbg. Univ., Ser. I, Mat. Mekh. Astron. 62, No. 1, 53--63 (2017) Full Text: DOI OpenURL
Gadjev, Ivan; Parvanov, Parvan E. Weighted approximation of functions in \(L_\infty [0,\infty)\). (English) Zbl 1381.41019 Mediterr. J. Math. 14, No. 6, Paper No. 220, 14 p. (2017). MSC: 41A36 41A17 41A25 41A27 PDF BibTeX XML Cite \textit{I. Gadjev} and \textit{P. E. Parvanov}, Mediterr. J. Math. 14, No. 6, Paper No. 220, 14 p. (2017; Zbl 1381.41019) Full Text: DOI OpenURL
Daher, R.; El Ouadih, S. On the approximation by entire functions of exponential type in \(L_{p,\alpha}(\mathbb {R})\). (English) Zbl 1378.41003 J. Pseudo-Differ. Oper. Appl. 8, No. 2, 341-347 (2017). MSC: 41A27 PDF BibTeX XML Cite \textit{R. Daher} and \textit{S. El Ouadih}, J. Pseudo-Differ. Oper. Appl. 8, No. 2, 341--347 (2017; Zbl 1378.41003) Full Text: DOI OpenURL
Akgün, Ramazan; Yildirir, Yunus Emre Generalized derivatives and approximation in weighted Lorentz spaces. (English) Zbl 1375.41011 Bull. Belg. Math. Soc. - Simon Stevin 24, No. 3, 353-366 (2017). MSC: 41A25 41A27 42A10 PDF BibTeX XML Cite \textit{R. Akgün} and \textit{Y. E. Yildirir}, Bull. Belg. Math. Soc. - Simon Stevin 24, No. 3, 353--366 (2017; Zbl 1375.41011) Full Text: Euclid OpenURL
Gupta, Vijay; Tachev, Gancho Approximation with positive linear operators and linear combinations. (English) Zbl 1371.41035 Developments in Mathematics 50. Cham: Springer (ISBN 978-3-319-58794-3/hbk; 978-3-319-58795-0/ebook). xiii, 186 p. (2017). Reviewer: Sorin Gheorghe Gal (Oradea) MSC: 41A36 41A25 41A27 41A28 41A40 PDF BibTeX XML Cite \textit{V. Gupta} and \textit{G. Tachev}, Approximation with positive linear operators and linear combinations. Cham: Springer (2017; Zbl 1371.41035) Full Text: DOI OpenURL
Lind, Martin; Petrushev, Pencho Nonlinear nonnested spline approximation. (English) Zbl 1367.41015 Constr. Approx. 45, No. 2, 143-191 (2017). Reviewer: Martin D. Buhmann (Gießen) MSC: 41A25 41A15 41A17 41A27 PDF BibTeX XML Cite \textit{M. Lind} and \textit{P. Petrushev}, Constr. Approx. 45, No. 2, 143--191 (2017; Zbl 1367.41015) Full Text: DOI arXiv OpenURL
Fechner, Włodzimierz Hlawka’s functional inequality on topological groups. (English) Zbl 1352.39016 Banach J. Math. Anal. 11, No. 1, 130-142 (2017). MSC: 39B62 26A15 42A16 41A25 41A27 PDF BibTeX XML Cite \textit{W. Fechner}, Banach J. Math. Anal. 11, No. 1, 130--142 (2017; Zbl 1352.39016) Full Text: DOI Euclid OpenURL
Area, I.; Dimitrov, Dimitar K.; Godoy, E. Recursive computation of generalised Zernike polynomials. (English) Zbl 1350.41013 J. Comput. Appl. Math. 312, 58-64 (2017). MSC: 41A21 41A27 42C05 PDF BibTeX XML Cite \textit{I. Area} et al., J. Comput. Appl. Math. 312, 58--64 (2017; Zbl 1350.41013) Full Text: DOI Link OpenURL
Akgün, Ramazan Mixed modulus of continuity in the Lebesgue spaces with Muckenhoupt weights and their properties. (English) Zbl 1424.42002 Turk. J. Math. 40, No. 6, 1169-1192 (2016). MSC: 42A10 41A17 41A27 41A28 PDF BibTeX XML Cite \textit{R. Akgün}, Turk. J. Math. 40, No. 6, 1169--1192 (2016; Zbl 1424.42002) Full Text: DOI OpenURL
Bustamante, Jorge; Cisneros-Martínez, Miriam A strong inverse theorem for Bernstein operators in weighted spaces. (English) Zbl 1377.41009 Jaen J. Approx. 8, No. 1, 75-95 (2016). MSC: 41A27 41A10 41A17 41A36 PDF BibTeX XML Cite \textit{J. Bustamante} and \textit{M. Cisneros-Martínez}, Jaen J. Approx. 8, No. 1, 75--95 (2016; Zbl 1377.41009) OpenURL
Guven, Ali; Yurt, Hasan Approximation theorems in \(L^p\) spaces of functions of several variables. (English) Zbl 1389.41018 Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 45, 5-22 (2016). MSC: 41A27 41A25 42A10 46E30 PDF BibTeX XML Cite \textit{A. Guven} and \textit{H. Yurt}, Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 45, 5--22 (2016; Zbl 1389.41018) OpenURL
Daher, Radouan; El Ouadih, Salah Some new estimates of approximation of functions by Fourier-Jacobi sums. (English) Zbl 1474.41009 Facta Univ., Ser. Math. Inf. 31, No. 1, 1-10 (2016). MSC: 41A10 42A24 41A25 41A27 PDF BibTeX XML Cite \textit{R. Daher} and \textit{S. El Ouadih}, Facta Univ., Ser. Math. Inf. 31, No. 1, 1--10 (2016; Zbl 1474.41009) OpenURL
Gadjev, Ivan Approximation of functions by Baskakov-Kantorovich operator. (English) Zbl 1351.41022 Result. Math. 70, No. 3-4, 385-400 (2016). MSC: 41A36 41A25 41A27 41A17 PDF BibTeX XML Cite \textit{I. Gadjev}, Result. Math. 70, No. 3--4, 385--400 (2016; Zbl 1351.41022) Full Text: DOI OpenURL
Liu, Guofen; Yang, Xiuzhong Approximation for a generalization of Bernstein operators. (English) Zbl 1346.41002 J. Inequal. Appl. 2016, Paper No. 204, 10 p. (2016). MSC: 41A25 41A27 41A36 PDF BibTeX XML Cite \textit{G. Liu} and \textit{X. Yang}, J. Inequal. Appl. 2016, Paper No. 204, 10 p. (2016; Zbl 1346.41002) Full Text: DOI OpenURL
López Lagomasino, G. On row sequences of Padé and Hermite-Padé approximation. (English) Zbl 1350.30057 Hardin, Douglas P. (ed.) et al., Modern trends in constructive function theory. Constructive functions 2014 conference in honor of Ed Saff’s 70th birthday, Vanderbilt University, Nashville, TN, USA, May 26–30, 2014. Proceedings. Providence, RI: American Mathematical Society (AMS) (ISBN 978-1-4704-2534-0/pbk; 978-1-4704-2934-8/ebook). Contemporary Mathematics 661, 141-151 (2016). MSC: 30E10 41A21 41A28 41A25 41A27 PDF BibTeX XML Cite \textit{G. López Lagomasino}, Contemp. Math. 661, 141--151 (2016; Zbl 1350.30057) Full Text: DOI arXiv OpenURL
Akgün, Ramazan; Yıldırır, Yunus Emre Improved direct and converse theorems in weighted Lorentz spaces. (English) Zbl 1342.41020 Bull. Belg. Math. Soc. - Simon Stevin 23, No. 2, 247-262 (2016). MSC: 41A25 41A27 42A10 PDF BibTeX XML Cite \textit{R. Akgün} and \textit{Y. E. Yıldırır}, Bull. Belg. Math. Soc. - Simon Stevin 23, No. 2, 247--262 (2016; Zbl 1342.41020) Full Text: Euclid OpenURL
Akgün, R.; Koç, H. Simultaneous approximation of functions in Orlicz spaces with Muckenhoupt weights. (English) Zbl 1343.42003 Complex Var. Elliptic Equ. 61, No. 8, 1107-1115 (2016). MSC: 42A10 46E30 41A17 41A27 41A28 PDF BibTeX XML Cite \textit{R. Akgün} and \textit{H. Koç}, Complex Var. Elliptic Equ. 61, No. 8, 1107--1115 (2016; Zbl 1343.42003) Full Text: DOI OpenURL
Takacs, Stefan; Takacs, Thomas Approximation error estimates and inverse inequalities for B-splines of maximum smoothness. (English) Zbl 1339.41012 Math. Models Methods Appl. Sci. 26, No. 7, 1411-1445 (2016). MSC: 41A15 41A27 41A44 65D07 PDF BibTeX XML Cite \textit{S. Takacs} and \textit{T. Takacs}, Math. Models Methods Appl. Sci. 26, No. 7, 1411--1445 (2016; Zbl 1339.41012) Full Text: DOI arXiv OpenURL
Kopotun, Kirill A. Uniform polynomial approximation with \(A^{\ast}\) weights having finitely many zeros. (English) Zbl 1337.30051 J. Math. Anal. Appl. 435, No. 1, 677-700 (2016). Reviewer: Béla Nagy (Szeged) MSC: 30E10 41A10 41A27 PDF BibTeX XML Cite \textit{K. A. Kopotun}, J. Math. Anal. Appl. 435, No. 1, 677--700 (2016; Zbl 1337.30051) Full Text: DOI arXiv OpenURL
Li, Ming; Cao, Feilong Multiscale interpolation on the sphere: convergence rate and inverse theorem. (English) Zbl 1410.65021 Appl. Math. Comput. 263, 134-150 (2015). MSC: 65D05 41A27 41A63 46E35 PDF BibTeX XML Cite \textit{M. Li} and \textit{F. Cao}, Appl. Math. Comput. 263, 134--150 (2015; Zbl 1410.65021) Full Text: DOI OpenURL
Kopotun, K. A. Polynomial approximation with doubling weights. (English) Zbl 1363.41011 Acta Math. Hung. 146, No. 2, 496-535 (2015). Reviewer: Josef Kofroň (Praha) MSC: 41A10 41A17 41A27 PDF BibTeX XML Cite \textit{K. A. Kopotun}, Acta Math. Hung. 146, No. 2, 496--535 (2015; Zbl 1363.41011) Full Text: DOI arXiv OpenURL
Lasuriya, R. A. Direct and inverse theorems on the approximation of functions by Fourier-Laplace sums in the spaces \(S^{(p,q)}(\sigma^m)\). (English. Russian original) Zbl 1339.41023 Math. Notes 98, No. 4, 601-612 (2015); translation from Mat. Zametki 98, No. 4, 530-543 (2015). MSC: 41A27 42B37 PDF BibTeX XML Cite \textit{R. A. Lasuriya}, Math. Notes 98, No. 4, 601--612 (2015; Zbl 1339.41023); translation from Mat. Zametki 98, No. 4, 530--543 (2015) Full Text: DOI OpenURL
Romanyuk, V. S. Multiple Haar base in the converse theorems of approximation and imbedding theorems. (English) Zbl 1349.42052 Anal. Math. 41, No. 4, 241-255 (2015). MSC: 42B35 41A27 46E30 41A50 PDF BibTeX XML Cite \textit{V. S. Romanyuk}, Anal. Math. 41, No. 4, 241--255 (2015; Zbl 1349.42052) Full Text: DOI OpenURL
Kochurov, A. S. Direct and inverse theorems on approximation by piecewise polynomial functions. (English. Russian original) Zbl 1334.41018 J. Math. Sci., New York 209, No. 1, 96-107 (2015); translation from Fundam. Prikl. Mat. 18, No. 5, 129-144 (2013). MSC: 41A27 41A10 PDF BibTeX XML Cite \textit{A. S. Kochurov}, J. Math. Sci., New York 209, No. 1, 96--107 (2015; Zbl 1334.41018); translation from Fundam. Prikl. Mat. 18, No. 5, 129--144 (2013) Full Text: DOI OpenURL
Guo, Shunsheng; Liu, Guofen; Yang, Xiuzhong Strong converse inequality for left Bernstein-Durrmeyer quasi-interpolants. (English) Zbl 1334.41017 J. Inequal. Appl. 2015, Paper No. 367, 9 p. (2015). MSC: 41A27 41A40 PDF BibTeX XML Cite \textit{S. Guo} et al., J. Inequal. Appl. 2015, Paper No. 367, 9 p. (2015; Zbl 1334.41017) Full Text: DOI OpenURL
Bosuwan, N.; López Lagomasino, G. Inverse theorem on row sequences of linear Padé-orthogonal approximation. (English) Zbl 1336.30058 Comput. Methods Funct. Theory 15, No. 4, 529-554 (2015). Reviewer: Yuri A. Farkov (Moscow) MSC: 30E10 41A27 41A21 PDF BibTeX XML Cite \textit{N. Bosuwan} and \textit{G. López Lagomasino}, Comput. Methods Funct. Theory 15, No. 4, 529--554 (2015; Zbl 1336.30058) Full Text: DOI arXiv Link OpenURL
Gadjev, Ivan Weighted approximation by Baskakov operators. (English) Zbl 1329.41032 Math. Inequal. Appl. 18, No. 4, 1443-1461 (2015). MSC: 41A36 41A25 41A27 41A17 PDF BibTeX XML Cite \textit{I. Gadjev}, Math. Inequal. Appl. 18, No. 4, 1443--1461 (2015; Zbl 1329.41032) Full Text: DOI OpenURL
Akgün, Ramazan; Yıldırır, Yunus Emre Jackson-Stechkin type inequality in weighted Lorentz spaces. (English) Zbl 1329.41018 Math. Inequal. Appl. 18, No. 4, 1283-1293 (2015). MSC: 41A25 41A27 42A10 PDF BibTeX XML Cite \textit{R. Akgün} and \textit{Y. E. Yıldırır}, Math. Inequal. Appl. 18, No. 4, 1283--1293 (2015; Zbl 1329.41018) Full Text: DOI OpenURL
Kopotun, Kirill A. Polynomial approximation with doubling weights having finitely many zeros and singularities. (English) Zbl 1323.41007 J. Approx. Theory 198, 24-62 (2015). Reviewer: Zoltán Finta (Cluj-Napoca) MSC: 41A10 41A27 PDF BibTeX XML Cite \textit{K. A. Kopotun}, J. Approx. Theory 198, 24--62 (2015; Zbl 1323.41007) Full Text: DOI arXiv OpenURL
Kopotun, K. A.; Leviatan, D.; Shevchuk, I. A. New moduli of smoothness: weighted DT moduli revisited and applied. (English) Zbl 1329.41020 Constr. Approx. 42, No. 1, 129-159 (2015). Reviewer: Radu Păltănea (Braşov) MSC: 41A25 41A17 41A10 41A27 PDF BibTeX XML Cite \textit{K. A. Kopotun} et al., Constr. Approx. 42, No. 1, 129--159 (2015; Zbl 1329.41020) Full Text: DOI arXiv OpenURL
Gadjev, Ivan Strong converse result for Baskakov operator. (English) Zbl 07407347 Serdica Math. J. 40, No. 3-4, 273-318 (2014). Reviewer: Jürgen Müller (Trier) MSC: 41A36 41A17 41A25 41A27 PDF BibTeX XML Cite \textit{I. Gadjev}, Serdica Math. J. 40, No. 3--4, 273--318 (2014; Zbl 07407347) Full Text: Link OpenURL
Draganov, Borislav R.; Ivanov, Kamen G. Natural weights for uniform approximation by the Szász-Mirakjan operator. (English) Zbl 1423.41032 Ivanov, Kamen (ed.) et al., Constructive theory of functions. Dedicated to Blagovest Sendov and to the memory of Vasil Popov. Proceedings of the 11th international conference, Sozopol, Bulgaria, June 9–14, 2013. Sofia: Prof. Marin Drinov Academic Publishing House. 57-82 (2014). MSC: 41A36 41A25 41A27 PDF BibTeX XML Cite \textit{B. R. Draganov} and \textit{K. G. Ivanov}, in: Constructive theory of functions. Dedicated to Blagovest Sendov and to the memory of Vasil Popov. Proceedings of the 11th international conference, Sozopol, Bulgaria, June 9--14, 2013. Sofia: Prof. Marin Drinov Academic Publishing House. 57--82 (2014; Zbl 1423.41032) OpenURL
Aksoy, Asuman G.; Almira, José M. On Shapiro’s lethargy theorem and some applications. (English) Zbl 1379.41019 Jaen J. Approx. 6, No. 1, 87-116 (2014). MSC: 41A29 41A25 41A27 41A65 PDF BibTeX XML Cite \textit{A. G. Aksoy} and \textit{J. M. Almira}, Jaen J. Approx. 6, No. 1, 87--116 (2014; Zbl 1379.41019) Full Text: arXiv OpenURL
Liu, Guofen Pointwise approximation for a type of Bernstein-Durrmeyer operators. (English) Zbl 1372.41008 J. Inequal. Appl. 2014, Paper No. 106, 6 p. (2014). MSC: 41A25 41A27 41A36 PDF BibTeX XML Cite \textit{G. Liu}, J. Inequal. Appl. 2014, Paper No. 106, 6 p. (2014; Zbl 1372.41008) Full Text: DOI OpenURL
Tomić, Miloš On the converse theorem of approximation in various metrics for nonperiodic functions. (English) Zbl 1404.41003 Publ. Inst. Math., Nouv. Sér. 95(109), 161-172 (2014). MSC: 41A27 PDF BibTeX XML Cite \textit{M. Tomić}, Publ. Inst. Math., Nouv. Sér. 95(109), 161--172 (2014; Zbl 1404.41003) Full Text: DOI OpenURL
Liu, Guofen; Yang, Xiuzhong On the approximation for generalized Szász-Durrmeyer type operators in the space \(L_p[0, \infty)\). (English) Zbl 1334.41034 J. Inequal. Appl. 2014, Paper No. 447, 15 p. (2014). MSC: 41A36 41A25 41A27 PDF BibTeX XML Cite \textit{G. Liu} and \textit{X. Yang}, J. Inequal. Appl. 2014, Paper No. 447, 15 p. (2014; Zbl 1334.41034) Full Text: DOI OpenURL
Finta, Zoltán Note on a Korovkin-type theorem. (English) Zbl 1312.41029 J. Math. Anal. Appl. 415, No. 2, 750-759 (2014). Reviewer: Zoltán Finta (Cluj-Napoca) MSC: 41A36 41A25 41A27 PDF BibTeX XML Cite \textit{Z. Finta}, J. Math. Anal. Appl. 415, No. 2, 750--759 (2014; Zbl 1312.41029) Full Text: DOI OpenURL
Yang, Xiru; Zhang, Chungou; Ma, Yingdian Approximations of generalized Bernstein operators. (English) Zbl 1313.41039 Anal. Theory Appl. 30, No. 2, 205-213 (2014). MSC: 41A27 41A36 PDF BibTeX XML Cite \textit{X. Yang} et al., Anal. Theory Appl. 30, No. 2, 205--213 (2014; Zbl 1313.41039) Full Text: DOI OpenURL
Ditzian, Z. New moduli of smoothness on the unit ball and other domains, introduction and main properties. (English) Zbl 1314.26004 Constr. Approx. 40, No. 1, 1-36 (2014). Reviewer: Daniel Cárdenas-Morales (Jaén) MSC: 26A15 41A10 41A17 41A27 41A36 26B35 41A63 42C10 47D03 PDF BibTeX XML Cite \textit{Z. Ditzian}, Constr. Approx. 40, No. 1, 1--36 (2014; Zbl 1314.26004) Full Text: DOI OpenURL
Coroianu, Lucian; Gal, Sorin G. Saturation and inverse results for the Bernstein max-product operator. (English) Zbl 1340.41034 Period. Math. Hung. 69, No. 2, 126-133 (2014). Reviewer: Ioan Rasa (Cluj-Napoca) MSC: 41A36 41A40 41A27 41A25 PDF BibTeX XML Cite \textit{L. Coroianu} and \textit{S. G. Gal}, Period. Math. Hung. 69, No. 2, 126--133 (2014; Zbl 1340.41034) Full Text: DOI OpenURL
Lytvyn, O. M.; Lytvyn, O. O.; Tkachenko, O. V.; Grytsaĭ, O. L. Hermitian interlineation of functions of two variables on the given system of disjoint lines with preservation of the class \(C^r(\mathbb R^2)\). (Ukrainian. English summary) Zbl 1313.65039 Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2014, No. 7, 53-59 (2014). MSC: 65D25 65D05 41A63 41A27 PDF BibTeX XML Cite \textit{O. M. Lytvyn} et al., Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2014, No. 7, 53--59 (2014; Zbl 1313.65039) Full Text: DOI OpenURL
Liu, Guofen Pointwise approximation for a generalization of Bernstein-Kantorovich operators. (Chinese. English summary) Zbl 1313.41054 Pure Appl. Math. 30, No. 1, 32-39 (2014). MSC: 41A36 41A25 41A27 PDF BibTeX XML Cite \textit{G. Liu}, Pure Appl. Math. 30, No. 1, 32--39 (2014; Zbl 1313.41054) Full Text: DOI OpenURL
Tachev, Gancho Approximation of bounded continuous functions by linear combinations of Phillips operators. (English) Zbl 1298.41041 Demonstr. Math. 47, No. 3, 662-671 (2014). MSC: 41A36 41A25 41A27 41A17 PDF BibTeX XML Cite \textit{G. Tachev}, Demonstr. Math. 47, No. 3, 662--671 (2014; Zbl 1298.41041) Full Text: DOI OpenURL
Lytvyn, O. M.; Lytvyn, O. O.; Tkachenko, O. V.; Grytsaĭ, O. L. Recovery of the functions of two variables with preservation of the class \(C^r(R^2)\) with the help of their traces and the traces of their derivatives up to a fixed order on the given curve. (Ukrainian. English summary) Zbl 1313.65038 Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2014, No. 2, 50-55 (2014). MSC: 65D25 65D05 41A63 41A27 PDF BibTeX XML Cite \textit{O. M. Lytvyn} et al., Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2014, No. 2, 50--55 (2014; Zbl 1313.65038) Full Text: DOI OpenURL
Ditzian, Z. Smoothness and best approximation with respect to Freud-type weights, a new approach. (English) Zbl 1324.41008 Acta Math. Hung. 143, No. 2, 378-421 (2014). Reviewer: Zoltán Finta (Cluj-Napoca) MSC: 41A10 41A17 41A25 41A27 41A40 PDF BibTeX XML Cite \textit{Z. Ditzian}, Acta Math. Hung. 143, No. 2, 378--421 (2014; Zbl 1324.41008) Full Text: DOI OpenURL
Abel, Ulrich; Ivan, Mircea; Păltănea, Radu Geometric series of positive linear operators and the inverse Voronovskaya theorem on a compact interval. (English) Zbl 1295.41018 J. Approx. Theory 184, 163-175 (2014). Reviewer: Naokant Deo (Delhi) MSC: 41A36 41A27 41A35 PDF BibTeX XML Cite \textit{U. Abel} et al., J. Approx. Theory 184, 163--175 (2014; Zbl 1295.41018) Full Text: DOI arXiv OpenURL
Singh, Karunesh; Agrawal, P. N. An inverse theorem in simultaneous approximation for a linear combination of Bernstein-Durrmeyer type polynomials. (English) Zbl 1340.41020 Acta Univ. Apulensis, Math. Inform. 33, 231-245 (2013). MSC: 41A28 41A27 41A36 PDF BibTeX XML Cite \textit{K. Singh} and \textit{P. N. Agrawal}, Acta Univ. Apulensis, Math. Inform. 33, 231--245 (2013; Zbl 1340.41020) OpenURL
Coroianu, Lucian; Gal, Sorin G. Localization results for the Lagrange max-product interpolation operator based on equidistant knots. (English) Zbl 1313.41003 Rev. Anal. Numér. Théor. Approx. 42, No. 2, 121-131 (2013). MSC: 41A05 41A40 41A27 41A36 PDF BibTeX XML Cite \textit{L. Coroianu} and \textit{S. G. Gal}, Rev. Anal. Numér. Théor. Approx. 42, No. 2, 121--131 (2013; Zbl 1313.41003) OpenURL