Bello, Glenier; Bello-Hernández, Manuel A dual-type problem to Christoffel function. (English) Zbl 1475.30115 J. Approx. Theory 264, Article ID 105539, 9 p. (2021). Reviewer: Radu Păltănea (Braşov) MSC: 30H10 42C05 PDFBibTeX XMLCite \textit{G. Bello} and \textit{M. Bello-Hernández}, J. Approx. Theory 264, Article ID 105539, 9 p. (2021; Zbl 1475.30115) Full Text: DOI
Torres-Teutle, Edgar; Mendoza-Torres, Francisco J. Hake’s theorem for functions of several variables. (Spanish. English summary) Zbl 1471.26004 Lect. Mat. 41, No. 1, 41-57 (2020). Reviewer: Radu Păltănea (Braşov) MSC: 26B15 26A39 26A42 PDFBibTeX XMLCite \textit{E. Torres-Teutle} and \textit{F. J. Mendoza-Torres}, Lect. Mat. 41, No. 1, 41--57 (2020; Zbl 1471.26004) Full Text: Link
Gavrea, Bogdan On a convexity problem with applications to Mastroianni type operators. (English) Zbl 1454.41008 Math. Inequal. Appl. 23, No. 2, 765-773 (2020). Reviewer: Radu Păltănea (Braşov) MSC: 41A36 26D10 26D15 46N30 PDFBibTeX XMLCite \textit{B. Gavrea}, Math. Inequal. Appl. 23, No. 2, 765--773 (2020; Zbl 1454.41008) Full Text: DOI
Arestov, V.; Babenko, A.; Deikalova, M.; Horváth, Á. Nikol’skii type inequality; Bessel weight; extremal functions; extremal constants. (English) Zbl 1424.47026 Anal. Math. 44, No. 1, 21-42 (2018). Reviewer: Radu Păltănea (Braşov) MSC: 47A30 41A44 41A17 PDFBibTeX XMLCite \textit{V. Arestov} et al., Anal. Math. 44, No. 1, 21--42 (2018; Zbl 1424.47026) Full Text: DOI
Acar, Tuncer; Ulusoy, Gulsum Approximation by modified Szász-Durrmeyer operators. (English) Zbl 1389.41024 Period. Math. Hung. 72, No. 1, 64-75 (2016). Reviewer: Radu Păltănea (Braşov) MSC: 41A36 41A25 41A35 PDFBibTeX XMLCite \textit{T. Acar} and \textit{G. Ulusoy}, Period. Math. Hung. 72, No. 1, 64--75 (2016; Zbl 1389.41024) Full Text: DOI
Gong, Y. H.; Jiang, X.; Li, Z.; Zhang, S. G. Error formulas for ideal interpolation. (English) Zbl 1399.41003 Acta Math. Hung. 148, No. 2, 466-480 (2016). Reviewer: Radu Păltănea (Braşov) MSC: 41A05 41A63 41A80 PDFBibTeX XMLCite \textit{Y. H. Gong} et al., Acta Math. Hung. 148, No. 2, 466--480 (2016; Zbl 1399.41003) Full Text: DOI arXiv
Danielyan, Arthur A. On the zero-free polynomial approximation problem. (English) Zbl 1342.41007 J. Approx. Theory 205, 60-63 (2016). Reviewer: Radu Păltănea (Braşov) MSC: 41A10 30E10 41A29 30C85 31A15 PDFBibTeX XMLCite \textit{A. A. Danielyan}, J. Approx. Theory 205, 60--63 (2016; Zbl 1342.41007) Full Text: DOI arXiv
Akturk, M. A.; Lukashov, A. Sharp Markov-type inequalities for rational functions on several intervals. (English) Zbl 1342.41014 J. Math. Anal. Appl. 436, No. 2, 1017-1022 (2016). Reviewer: Radu Păltănea (Braşov) MSC: 41A17 30C85 42A05 26C15 PDFBibTeX XMLCite \textit{M. A. Akturk} and \textit{A. Lukashov}, J. Math. Anal. Appl. 436, No. 2, 1017--1022 (2016; Zbl 1342.41014) Full Text: DOI arXiv
Murakami, Satomi; Ohwa, Hiroki Periodic points of some discontinuous mappings. (English) Zbl 1342.26008 Am. Math. Mon. 122, No. 6, 581-586 (2015). Reviewer: Radu Păltănea (Braşov) MSC: 26A18 26A15 PDFBibTeX XMLCite \textit{S. Murakami} and \textit{H. Ohwa}, Am. Math. Mon. 122, No. 6, 581--586 (2015; Zbl 1342.26008) Full Text: DOI
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 PDFBibTeX XMLCite \textit{K. A. Kopotun} et al., Constr. Approx. 42, No. 1, 129--159 (2015; Zbl 1329.41020) Full Text: DOI arXiv
Zhuk, V. V.; Bure, V. M. On constants in the generalized Jackson theorem. (English. Russian original) Zbl 1329.41015 J. Math. Sci., New York 205, No. 2, 240-246 (2015); translation from Probl. Mat. Anal. 77, 105-110 (2014). Reviewer: Radu Păltănea (Braşov) MSC: 41A17 41A44 41A25 42A10 PDFBibTeX XMLCite \textit{V. V. Zhuk} and \textit{V. M. Bure}, J. Math. Sci., New York 205, No. 2, 240--246 (2015; Zbl 1329.41015); translation from Probl. Mat. Anal. 77, 105--110 (2014) Full Text: DOI
Ditzian, Z. Norm and smoothness of a function related to the coefficients of its expansion. (English) Zbl 1329.41013 J. Approx. Theory 196, 101-110 (2015). Reviewer: Radu Păltănea (Braşov) MSC: 41A17 41A25 42C10 PDFBibTeX XMLCite \textit{Z. Ditzian}, J. Approx. Theory 196, 101--110 (2015; Zbl 1329.41013) Full Text: DOI
Sroka, Grzegorz Constants in V. A. Markov’s inequality in \(L^p\) norms. (English) Zbl 1321.41013 J. Approx. Theory 194, 27-34 (2015). Reviewer: Radu Păltănea (Braşov) MSC: 41A17 PDFBibTeX XMLCite \textit{G. Sroka}, J. Approx. Theory 194, 27--34 (2015; Zbl 1321.41013) Full Text: DOI
Glazyrina, Polina; Tikhonov, Sergey Jacobi weights, fractional integration, and sharp Ulyanov inequalities. (English) Zbl 1321.41011 J. Approx. Theory 195, 122-140 (2015). Reviewer: Radu Păltănea (Braşov) MSC: 41A17 26A33 26D10 42C10 PDFBibTeX XMLCite \textit{P. Glazyrina} and \textit{S. Tikhonov}, J. Approx. Theory 195, 122--140 (2015; Zbl 1321.41011) Full Text: DOI arXiv
Maizlish, O.; Prymak, A. Convex polynomial approximation in \(\mathbb{R}^d\) with Freud weights. (English) Zbl 1312.41012 J. Approx. Theory 192, 60-68 (2015). Reviewer: Radu Păltănea (Braşov) MSC: 41A10 41A63 PDFBibTeX XMLCite \textit{O. Maizlish} and \textit{A. Prymak}, J. Approx. Theory 192, 60--68 (2015; Zbl 1312.41012) Full Text: DOI arXiv
Bustamante, Jorge; García-Muñoz, Miguel A.; Quesada, José M. Bernstein polynomial and discontinuous functions. (English) Zbl 1342.41026 J. Math. Anal. Appl. 411, No. 2, 829-837 (2014). Reviewer: Radu Păltănea (Braşov) MSC: 41A36 41A10 41A25 26A15 PDFBibTeX XMLCite \textit{J. Bustamante} et al., J. Math. Anal. Appl. 411, No. 2, 829--837 (2014; Zbl 1342.41026) Full Text: DOI
Carnicer, J. M.; Mainar, E.; Peña, J. M. On the critical lengths of cycloidal spaces. (English) Zbl 1315.41001 Constr. Approx. 39, No. 3, 573-583 (2014). Reviewer: Radu Păltănea (Braşov) MSC: 41A10 41A50 41A05 42A10 41A30 65D17 PDFBibTeX XMLCite \textit{J. M. Carnicer} et al., Constr. Approx. 39, No. 3, 573--583 (2014; Zbl 1315.41001) Full Text: DOI
Gogatishvili, Amiran; Opic, Bohumír; Tikhonov, Sergey; Trebels, Walter Ulyanov-type inequalities between Lorentz-Zygmund spaces. (English) Zbl 1316.41010 J. Fourier Anal. Appl. 20, No. 5, 1020-1049 (2014). Reviewer: Radu Păltănea (Braşov) MSC: 41A17 46E30 46E35 42B15 PDFBibTeX XMLCite \textit{A. Gogatishvili} et al., J. Fourier Anal. Appl. 20, No. 5, 1020--1049 (2014; Zbl 1316.41010) Full Text: DOI
Babenko, A. G.; Dolmatova, N. V.; Kryakin, Yu. V. Sharp Jackson inequality with a special modulus of continuity. (English. Russian original) Zbl 1315.41004 Proc. Steklov Inst. Math. 284, Suppl. 1, S41-S58 (2014); translation from Tr. Inst. Mat. Mekh. (Ekaterinburg) 18, No. 4, 51-67 (2012). Reviewer: Radu Păltănea (Braşov) MSC: 41A17 41A25 41A44 42A10 41A50 PDFBibTeX XMLCite \textit{A. G. Babenko} et al., Proc. Steklov Inst. Math. 284, S41--S58 (2014; Zbl 1315.41004); translation from Tr. Inst. Mat. Mekh. (Ekaterinburg) 18, No. 4, 51--67 (2012) Full Text: DOI
Bustamante, J. Best \(L^1\) approximation of truncated functions, Whitney-type and Bohr-Favard-type inequalities. (Best \(L^1\) approximation of truncated functions, Whitney-type and Borh-Favard-type inequalities.) (English) Zbl 1324.41034 Acta Math. Hung. 143, No. 1, 208-219 (2014). Reviewer: Radu Păltănea (Brasov) MSC: 41A44 41A10 41A17 41A50 PDFBibTeX XMLCite \textit{J. Bustamante}, Acta Math. Hung. 143, No. 1, 208--219 (2014; Zbl 1324.41034) Full Text: DOI
Menkyna, Robert On the sums of lower semicontinuous strong Świątkowski functions. (English) Zbl 1305.26011 Real Anal. Exch. 39(2013-2014), No. 1, 15-32 (2014). Reviewer: Radu Păltănea (Braşov) MSC: 26A15 26A21 PDFBibTeX XMLCite \textit{R. Menkyna}, Real Anal. Exch. 39, No. 1, 15--32 (2014; Zbl 1305.26011) Full Text: DOI Euclid
Soltani, Fethi Pitt’s inequalities for the Dunkl transform on \(\mathbb{R}^{d}\). (English) Zbl 1305.44005 Integral Transforms Spec. Funct. 25, No. 9, 686-696 (2014). Reviewer: Radu Păltănea (Braşov) MSC: 44A20 42B10 41A44 PDFBibTeX XMLCite \textit{F. Soltani}, Integral Transforms Spec. Funct. 25, No. 9, 686--696 (2014; Zbl 1305.44005) Full Text: DOI
Kowalczyk, S. On operations in \(C(X)\) determined by continuous functions. (English) Zbl 1313.46056 Acta Math. Hung. 142, No. 1, 56-71 (2014). Reviewer: Radu Păltănea (Brasov) MSC: 46J10 46E15 54C30 54F45 26A15 PDFBibTeX XMLCite \textit{S. Kowalczyk}, Acta Math. Hung. 142, No. 1, 56--71 (2014; Zbl 1313.46056) Full Text: DOI
Nagy, Béla; Toókos, Ferenc Bernstein inequality in \(L^\alpha\) norms. (English) Zbl 1299.41022 Acta Sci. Math. 79, No. 1-2, 129-174 (2013). Reviewer: Radu Păltănea (Brasov) MSC: 41A17 26D05 30C85 PDFBibTeX XMLCite \textit{B. Nagy} and \textit{F. Toókos}, Acta Sci. Math. 79, No. 1--2, 129--174 (2013; Zbl 1299.41022)
Leindler, László On the structure of rest bounded variation sequences. (English) Zbl 1299.11019 Acta Sci. Math. 79, No. 1-2, 43-48 (2013). Reviewer: Radu Păltănea (Brasov) MSC: 11B50 40A99 26A15 42A32 PDFBibTeX XMLCite \textit{L. Leindler}, Acta Sci. Math. 79, No. 1--2, 43--48 (2013; Zbl 1299.11019)
Garrigós, Gustavo; Hernández, Eugenio; Oikhberg, Timur Lebesgue-type inequalities for quasi-greedy bases. (English) Zbl 1284.41023 Constr. Approx. 38, No. 3, 447-470 (2013). Reviewer: Radu Păltănea (Braşov) MSC: 41A65 41A46 41A17 46B15 PDFBibTeX XMLCite \textit{G. Garrigós} et al., Constr. Approx. 38, No. 3, 447--470 (2013; Zbl 1284.41023) Full Text: DOI arXiv Link
Mazure, Marie-Laurence Piecewise Chebyshev-Schoenberg operators: shape preservation, approximation and space embedding. (English) Zbl 1272.41012 J. Approx. Theory 166, 106-135 (2013). Reviewer: Radu Păltănea (Braşov) MSC: 41A35 41A15 41A50 PDFBibTeX XMLCite \textit{M.-L. Mazure}, J. Approx. Theory 166, 106--135 (2013; Zbl 1272.41012) Full Text: DOI
Baran, Mirosław; Białas-Cież, Leokadia; Milówka, Beata On the best exponent in Markov inequality. (English) Zbl 1273.41008 Potential Anal. 38, No. 2, 635-651 (2013). Reviewer: Radu Păltănea (Braşov) MSC: 41A17 41A44 PDFBibTeX XMLCite \textit{M. Baran} et al., Potential Anal. 38, No. 2, 635--651 (2013; Zbl 1273.41008) Full Text: DOI
Finta, Zoltán On generalized Voronovskaja theorem for Bernstein polynomials. (English) Zbl 1299.41041 Carpathian J. Math. 28, No. 2, 231-238 (2012). Reviewer: Radu Păltănea (Braşov) MSC: 41A36 41A28 41A25 PDFBibTeX XMLCite \textit{Z. Finta}, Carpathian J. Math. 28, No. 2, 231--238 (2012; Zbl 1299.41041)
Vinogradov, O. L.; Zhuk, V. V. Estimates for functionals with a known finite set of moments in terms of deviations of operators constructed with the use of the Steklov averages and finite differences. (English. Russian original) Zbl 1262.41010 J. Math. Sci., New York 184, No. 6, 679-698 (2012); translation from Zap. Nauchn. Semin. POMI 392, 32-66 (2011). Reviewer: Radu Păltănea (Braşov) MSC: 41A17 41A25 41A44 41A45 41A50 41A10 26A15 42A10 PDFBibTeX XMLCite \textit{O. L. Vinogradov} and \textit{V. V. Zhuk}, J. Math. Sci., New York 184, No. 6, 679--698 (2012; Zbl 1262.41010); translation from Zap. Nauchn. Semin. POMI 392, 32--66 (2011) Full Text: DOI
Weimar, Markus The complexity of linear tensor product problems in (anti)symmetric Hilbert spaces. (English) Zbl 1262.41025 J. Approx. Theory 164, No. 10, 1345-1368 (2012). Reviewer: Radu Păltănea (Braşov) MSC: 41A65 68Q17 68Q25 65Y20 PDFBibTeX XMLCite \textit{M. Weimar}, J. Approx. Theory 164, No. 10, 1345--1368 (2012; Zbl 1262.41025) Full Text: DOI arXiv
Amini, Arash A.; Wainwright, Martin J. Approximation properties of certain operator-induced norms on Hilbert spaces. (English) Zbl 1262.41015 J. Approx. Theory 164, No. 2, 320-345 (2012). Reviewer: Radu Păltănea (Braşov) MSC: 41A46 46C05 42C05 47B32 15A45 46E35 62F12 PDFBibTeX XMLCite \textit{A. A. Amini} and \textit{M. J. Wainwright}, J. Approx. Theory 164, No. 2, 320--345 (2012; Zbl 1262.41015) Full Text: DOI arXiv
Leviatan, Dany; Lubinsky, Doron S. The degree of shape preserving weighted polynomial approximation. (English) Zbl 1262.41005 J. Approx. Theory 164, No. 2, 218-228 (2012). Reviewer: Radu Păltănea (Braşov) MSC: 41A10 41A17 41A29 PDFBibTeX XMLCite \textit{D. Leviatan} and \textit{D. S. Lubinsky}, J. Approx. Theory 164, No. 2, 218--228 (2012; Zbl 1262.41005) Full Text: DOI
Courant, R. [Greenberg, Marvin Jay; McShane, E. J.] Differential and integral calculus. Volume I. Transl. From the German by E. J. McShane. With a new foreword and revised by Marvin Jay Greenberg. Reprint of the 2nd ed. published 1937 by Blackie & Son. (English) Zbl 1245.26001 Bronx, NY: Ishi Press International (ISBN 978-4-87187-838-8/pbk). 38 p., xiii, 616 p. (2011). Reviewer: Radu Păltănea (Braşov) MSC: 26-01 34-01 40-01 41-01 PDFBibTeX XMLCite \textit{R. Courant}, Differential and integral calculus. Volume I. Transl. From the German by E. J. McShane. With a new foreword and revised by Marvin Jay Greenberg. Reprint of the 2nd ed. published 1937 by Blackie \& Son. Bronx, NY: Ishi Press International (2011; Zbl 1245.26001)
Groux, Roland Around derivatives. Themes, exercises and problems. (Autour des dérivées. Thèmes, exercices et problèmes. L2, L3, Master, Capes.) (French) Zbl 1211.26001 Pratiques Mathématiques. Toulouse: Cépaduès-Éditions (ISBN 978-2-85428-933-6/pbk). 193 p. (2009). Reviewer: Radu Păltănea (Braşov) MSC: 26-01 00A07 26A24 26A33 PDFBibTeX XMLCite \textit{R. Groux}, Autour des dérivées. Thèmes, exercices et problèmes. L2, L3, Master, Capes. Toulouse: Cépaduès-Éditions (2009; Zbl 1211.26001)
Shi, Xiquan; Kamau, Ben; Liu, Fengshan; Yin, Baocai The generic dimensions of the space of smooth splines of degree 7 on tetrahedral partitions. (English) Zbl 1175.41009 J. Approx. Theory 157, No. 2, 90-112 (2009). Reviewer: Radu Păltănea (Braşov) MSC: 41A15 65D07 41A63 PDFBibTeX XMLCite \textit{X. Shi} et al., J. Approx. Theory 157, No. 2, 90--112 (2009; Zbl 1175.41009) Full Text: DOI
Schumaker, Larry L.; Sorokina, Tatyana; Worsey, Andrew J. A \(C^1\) quadratic trivariate macro-element space defined over arbitrary tetrahedral partitions. (English) Zbl 1176.41007 J. Approx. Theory 158, No. 1, 126-142 (2009). Reviewer: Radu Păltănea (Braşov) MSC: 41A05 41A15 PDFBibTeX XMLCite \textit{L. L. Schumaker} et al., J. Approx. Theory 158, No. 1, 126--142 (2009; Zbl 1176.41007) Full Text: DOI
Cantero, María José; Simon, Barry Poisson brackets of orthogonal polynomials. (English) Zbl 1200.41040 J. Approx. Theory 158, No. 1, 3-48 (2009). Reviewer: Radu Păltănea (Braşov) MSC: 41A99 53D05 15A21 15A99 37A10 42C05 PDFBibTeX XMLCite \textit{M. J. Cantero} and \textit{B. Simon}, J. Approx. Theory 158, No. 1, 3--48 (2009; Zbl 1200.41040) Full Text: DOI arXiv Link
Cheney, Ward; Light, Will A course in approximation theory. (English) Zbl 1167.41001 Graduate Studies in Mathematics 101. Providence, RI: American Mathematical Society (AMS) (ISBN 978-0-8218-4798-5/hbk). xiv, 359 p. (2009). Reviewer: Radu Păltănea (Braşov) MSC: 41-01 41A05 41A10 41A15 41A30 41A35 41A63 42A38 42A82 42B35 42C40 PDFBibTeX XMLCite \textit{W. Cheney} and \textit{W. Light}, A course in approximation theory. Providence, RI: American Mathematical Society (AMS) (2009; Zbl 1167.41001)
Faraci, Francesca; Iannizzotto, Antonio Well posed optimization problems and nonconvex Chebyshev sets in Hilbert spaces. (English) Zbl 1161.41010 SIAM J. Optim. 19, No. 1, 211-216 (2008). Reviewer: Radu Păltănea (Braşov) MSC: 41A65 41A52 PDFBibTeX XMLCite \textit{F. Faraci} and \textit{A. Iannizzotto}, SIAM J. Optim. 19, No. 1, 211--216 (2008; Zbl 1161.41010) Full Text: DOI
Jumarie, Guy From self-similarity to fractional derivative of non-differentiable functions via Mittag-Leffler function. (English) Zbl 1175.26012 Appl. Math. Sci., Ruse 2, No. 37-40, 1949-1962 (2008). Reviewer: Radu Păltănea (Braşov) MSC: 26A33 41A58 60G18 PDFBibTeX XMLCite \textit{G. Jumarie}, Appl. Math. Sci., Ruse 2, No. 37--40, 1949--1962 (2008; Zbl 1175.26012) Full Text: Link
Mironenko, A. V. Approximation by the class of functions with bounded second derivative. (English. Russian original) Zbl 1163.41003 Math. Notes 84, No. 4, 544-554 (2008); translation from Mat. Zametki 84, No. 4, 583-594 (2008). Reviewer: Radu Păltănea (Braşov) MSC: 41A30 41A65 41A44 PDFBibTeX XMLCite \textit{A. V. Mironenko}, Math. Notes 84, No. 4, 544--554 (2008; Zbl 1163.41003); translation from Mat. Zametki 84, No. 4, 583--594 (2008) Full Text: DOI
Kós, G. Two Turán type inequalities. (English) Zbl 1174.41025 Acta Math. Hung. 119, No. 3, 219-226 (2008). Reviewer: Radu Paltanea (Brasov) MSC: 41A44 26D05 26D15 PDFBibTeX XMLCite \textit{G. Kós}, Acta Math. Hung. 119, No. 3, 219--226 (2008; Zbl 1174.41025) Full Text: DOI
Qi, Liqun; Tseng, Paul On almost smooth functions and piecewise smooth functions. (English) Zbl 1125.26019 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 67, No. 3, 773-794 (2007). Reviewer: Radu Păltănea (Braşov) MSC: 26B05 26A27 26B25 26B35 49J52 52A41 65D15 90C25 PDFBibTeX XMLCite \textit{L. Qi} and \textit{P. Tseng}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 67, No. 3, 773--794 (2007; Zbl 1125.26019) Full Text: DOI
Yu, Thomas Pok-Yin How data dependent is a nonlinear subdivision scheme? A case study based on convexity preserving subdivision. (English) Zbl 1124.26003 SIAM J. Numer. Anal. 44, No. 3, 936-948 (2006). Reviewer: Radu Păltănea (Braşov) MSC: 26A16 26A15 26A18 41A05 41A46 42C40 PDFBibTeX XMLCite \textit{T. P. Y. Yu}, SIAM J. Numer. Anal. 44, No. 3, 936--948 (2006; Zbl 1124.26003) Full Text: DOI
Kopotun, K. A.; Levitan, D.; Shevchuk, I. A. Convex polynomial approximation in the uniform norm: conclusion. (English) Zbl 1102.41021 Can. J. Math. 57, No. 6, 1224-1248 (2005). Reviewer: Radu Păltănea (Braşov) MSC: 41A29 41A05 PDFBibTeX XMLCite \textit{K. A. Kopotun} et al., Can. J. Math. 57, No. 6, 1224--1248 (2005; Zbl 1102.41021) Full Text: DOI
Bruin, M. G.; Dikshit, H. P. Pál-type Birkhoff interpolation on nonuniformly distributed points. (English) Zbl 1083.41001 Numer. Algorithms 40, No. 1, 1-16 (2005). Reviewer: Radu Păltănea (Braşov) MSC: 41A05 PDFBibTeX XMLCite \textit{M. G. Bruin} and \textit{H. P. Dikshit}, Numer. Algorithms 40, No. 1, 1--16 (2005; Zbl 1083.41001) Full Text: DOI
Ubhaya, Vasant A. Best approximation by integer-valued functions. (English) Zbl 1076.41016 Appl. Math. Lett. 18, No. 4, 475-478 (2005). Reviewer: Radu Păltănea (Braşov) MSC: 41A50 41A65 PDFBibTeX XMLCite \textit{V. A. Ubhaya}, Appl. Math. Lett. 18, No. 4, 475--478 (2005; Zbl 1076.41016) Full Text: DOI
de Bruin, Marcel G. \((0,m)\) Pál-type interpolation on the Möbius transform of roots of unity. (English) Zbl 1086.41004 J. Comput. Appl. Math. 178, No. 1-2, 147-153 (2005). Reviewer: Radu Păltănea (Braşov) MSC: 41A10 41A05 30E05 PDFBibTeX XMLCite \textit{M. G. de Bruin}, J. Comput. Appl. Math. 178, No. 1--2, 147--153 (2005; Zbl 1086.41004) Full Text: DOI
Beroual, Nabil; Hannachi, Messaoud On the asymptotic behaviour of cubics. (Sur le comportement asymptotique des cubiques.). (French) Zbl 1110.26022 An. Univ. Oradea, Fasc. Mat. 11, 181-191 (2004). Reviewer: Radu Păltănea (Braşov) MSC: 26E35 14H05 14H50 PDFBibTeX XMLCite \textit{N. Beroual} and \textit{M. Hannachi}, An. Univ. Oradea, Fasc. Mat. 11, 181--191 (2004; Zbl 1110.26022)
Starovoĭtov, A. P. Coincidence of least uniform deviations of a function from polynomials and rational fractions. (English. Russian original) Zbl 1071.41007 Math. Notes 74, No. 4, 578-582 (2003); translation from Mat. Zametki 74, No. 4, 612-617 (2003). Reviewer: Radu Păltănea (Braşov) MSC: 41A10 41A20 41A50 PDFBibTeX XMLCite \textit{A. P. Starovoĭtov}, Math. Notes 74, No. 4, 578--582 (2003; Zbl 1071.41007); translation from Mat. Zametki 74, No. 4, 612--617 (2003) Full Text: DOI
Cuenya, Héctor; Marano, Miguel A minimizing property that characterizes \(L_p\)-spaces. (English) Zbl 0911.41019 Numer. Funct. Anal. Optimization 19, No. 3-4, 273-283 (1998). Reviewer: R.Păltănea (Braşov) MSC: 41A65 46E30 PDFBibTeX XMLCite \textit{H. Cuenya} and \textit{M. Marano}, Numer. Funct. Anal. Optim. 19, No. 3--4, 273--283 (1998; Zbl 0911.41019) Full Text: DOI
Maier, Ulrike On best approximation of the monomials on the unit ball of \(\mathbb{R}^ r\). (English) Zbl 0890.41016 J. Approximation Theory 92, No. 1, 74-81 (1998). Reviewer: R.Păltănea (Braşov) MSC: 41A50 41A05 41A63 PDFBibTeX XMLCite \textit{U. Maier}, J. Approx. Theory 92, No. 1, 74--81 (1998; Zbl 0890.41016) Full Text: DOI
Khavinson, S. Ya. Best approximation by linear superpositions (approximate nomography). Transl. by D. Khavinson from an orig. Russian manuscript. (English) Zbl 0882.41001 Translations of Mathematical Monographs. 159. Providence, RI: American Mathematical Society (AMS). vii, 175 p. (1997). Reviewer: R.Păltănea (Braşov) MSC: 41-01 41A50 26B40 41A65 PDFBibTeX XMLCite \textit{S. Ya. Khavinson}, Best approximation by linear superpositions (approximate nomography). Transl. by D. Khavinson from an orig. Russian manuscript. Providence, RI: AMS, American Mathematical Society (1997; Zbl 0882.41001)
Park, Sehie Extensions of best approximation and coincidence theorems. (English) Zbl 0903.41020 Int. J. Math. Math. Sci. 20, No. 4, 689-698 (1997). Reviewer: R.Păltănea (Braşov) MSC: 41A65 47H10 54H25 55M20 PDFBibTeX XMLCite \textit{S. Park}, Int. J. Math. Math. Sci. 20, No. 4, 689--698 (1997; Zbl 0903.41020) Full Text: DOI EuDML
Butzer, P. L.; Gessinger, A. Connections between the approximation of semigroup and cosine operator functions. (English) Zbl 0885.41016 Atti Semin. Mat. Fis. Univ. Modena 45, No. 1, 81-142 (1997). Reviewer: R.Păltănea (Braşov) MSC: 41A35 41A25 41A40 PDFBibTeX XMLCite \textit{P. L. Butzer} and \textit{A. Gessinger}, Atti Semin. Mat. Fis. Univ. Modena 45, No. 1, 81--142 (1997; Zbl 0885.41016)
Cui, Zhenlu A saturation result for Bernstein-Durrmeyer polynomials in weighted norm. (English) Zbl 0868.41016 J. Math. Res. Expo. 16, No. 4, 541-545 (1996). Reviewer: R.Păltănea (Braşov) MSC: 41A35 41A36 PDFBibTeX XMLCite \textit{Z. Cui}, J. Math. Res. Expo. 16, No. 4, 541--545 (1996; Zbl 0868.41016)
Cohen, Albert; Dyn, Nira Nonstationary subdivision schemes and multiresolution analysis. (English) Zbl 0862.41013 SIAM J. Math. Anal. 27, No. 6, 1745-1769 (1996). Reviewer: R.Păltănea (Braşov) MSC: 41A30 42C15 PDFBibTeX XMLCite \textit{A. Cohen} and \textit{N. Dyn}, SIAM J. Math. Anal. 27, No. 6, 1745--1769 (1996; Zbl 0862.41013) Full Text: DOI
Park, Sungh Ho; Rhee, Hyang Joo Best simultaneous approximations from a convex subset. (English) Zbl 0862.41022 Bull. Korean Math. Soc. 33, No. 2, 193-204 (1996). Reviewer: R.Păltănea (Braşov) MSC: 41A50 41A65 41A63 PDFBibTeX XMLCite \textit{S. H. Park} and \textit{H. J. Rhee}, Bull. Korean Math. Soc. 33, No. 2, 193--204 (1996; Zbl 0862.41022)
Carabineanu, Adrian A generalization of the distribution ‘Cauchy principle value’. (Romanian. French summary) Zbl 0867.46031 Stud. Cercet. Mat. 48, No. 5-6, 295-302 (1996). Reviewer: R.Păltănea (Braşov) MSC: 46F10 26A24 26A42 PDFBibTeX XMLCite \textit{A. Carabineanu}, Stud. Cercet. Mat. 48, No. 5--6, 295--302 (1996; Zbl 0867.46031)
Jiang, Tianzi On the rate of convergence of one linear positive operator for functions of \(p\)-bounded variation. (English) Zbl 0858.41012 Indian J. Pure Appl. Math. 27, No. 3, 285-294 (1996). Reviewer: R.Păltănea (Braşov) MSC: 41A25 41A36 PDFBibTeX XMLCite \textit{T. Jiang}, Indian J. Pure Appl. Math. 27, No. 3, 285--294 (1996; Zbl 0858.41012)
Fang, Gensun The asymptotic connection between approximation by cardinal splines and entire functions of exponential type. (English) Zbl 0858.41006 Chin. Sci. Bull. 41, No. 4, 265-270 (1996). Reviewer: R.Păltănea (Braşov) MSC: 41A15 41A30 41A50 PDFBibTeX XMLCite \textit{G. Fang}, Chin. Sci. Bull. 41, No. 4, 265--270 (1996; Zbl 0858.41006)
Kovalenko, I. N.; Nakonechnyj, A. N.; Romanov, A. B. Chebyshev approximation of the distribution function of nonnegative random variables. (English. Russian original) Zbl 0881.41009 Cybern. Syst. Anal. 32, No. 2, 211-218 (1996); translation from Kibern. Sist. Anal. 1996, No. 2, 73-81 (1996). Reviewer: R.Păltănea (Braşov) MSC: 41A10 41A60 42C10 62E20 PDFBibTeX XMLCite \textit{I. N. Kovalenko} et al., Cybern. Syst. Anal. 32, No. 2, 211--218 (1996; Zbl 0881.41009); translation from Kibern. Sist. Anal. 1996, No. 2, 73--81 (1996) Full Text: DOI
Nishishiraho, Toshihiko Korovkin type approximation closures for vector-valued functions. (English) Zbl 0881.41020 Ryukyu Math. J. 9, 53-69 (1996). Reviewer: R.Păltănea (Braşov) MSC: 41A36 PDFBibTeX XMLCite \textit{T. Nishishiraho}, Ryukyu Math. J. 9, 53--69 (1996; Zbl 0881.41020)
Stein, Sherman K. Do estimates of an integral really improve as \(n\) increases? (English) Zbl 0862.41023 Math. Mag. 68, No. 1, 16-26 (1995). Reviewer: R.Păltănea (Braşov) MSC: 41A55 40A05 65D30 PDFBibTeX XMLCite \textit{S. K. Stein}, Math. Mag. 68, No. 1, 16--26 (1995; Zbl 0862.41023) Full Text: DOI
Appell, Jürgen How to approximate the inverse operator. (English) Zbl 0848.41025 Singh, S. P. (ed.) et al., Approximation theory, wavelets and applications. Proceedings of the NATO Advanced Study Institute on recent developments in approximation theory, wavelets and applications, Maratea, Italy, May 16-26, 1994. Dordrecht: Kluwer Academic Publishers. NATO ASI Ser., Ser. C, Math. Phys. Sci. 454, 295-302 (1995). Reviewer: R.Păltănea (Braşov) MSC: 41A63 41A10 47A50 47A58 PDFBibTeX XMLCite \textit{J. Appell}, NATO ASI Ser., Ser. C, Math. Phys. Sci. 454, 295--302 (1995; Zbl 0848.41025)
Habib, A. W.; Goldman, R. N. Notions of geometric continuity based on geometric invariants. (English) Zbl 0849.53002 Dæhlen, Morten (ed.) et al., Mathematical methods for curves and surfaces. Papers from an international conference held June 16-21, 1994 in Ulvik, Norway. Nashville, TN: Vanderbilt University Press. 187-201 (1995). Reviewer: R.Păltănea (Braşov) MSC: 53A04 53A55 PDFBibTeX XMLCite \textit{A. W. Habib} and \textit{R. N. Goldman}, in: Mathematical methods for curves and surfaces. Papers from an international conference held June 16-21, 1994 in Ulvik, Norway. Nashville, TN: Vanderbilt University Press. 187--201 (1995; Zbl 0849.53002)
Fernández, Manuel; Soriano, María L. On the Chebyshev alternation theorem. (English) Zbl 0886.41028 Extr. Math. 10, No. 1, 64-67 (1995). Reviewer: R.Păltănea (Braşov) MSC: 41A65 46B20 PDFBibTeX XMLCite \textit{M. Fernández} and \textit{M. L. Soriano}, Extr. Math. 10, No. 1, 64--67 (1995; Zbl 0886.41028) Full Text: EuDML
Miller, J.; Martin, C. Some properties of mappings induced by Dirichlet polynomials. (English) Zbl 0842.41004 Appl. Math. Comput. 64, No. 1, 1-11 (1994). Reviewer: R.Păltănea (Braşov) MSC: 41A05 26B10 26A09 PDFBibTeX XMLCite \textit{J. Miller} and \textit{C. Martin}, Appl. Math. Comput. 64, No. 1, 1--11 (1994; Zbl 0842.41004) Full Text: DOI
Kopotun, K. A.; Listopad, V. V. Remarks on monotone and convex approximation by algebraic polynomials. (English) Zbl 0844.41008 Ukr. Mat. Zh. 46, No. 9, 1266-1270 (1994). Reviewer: R.Păltănea (Braşov) MSC: 41A10 41A29 41A50 PDFBibTeX XMLCite \textit{K. A. Kopotun} and \textit{V. V. Listopad}, Ukr. Mat. Zh. 46, No. 9, 1266--1270 (1994; Zbl 0844.41008) Full Text: DOI
Budnik, V. G. On coapproximation of functions convex on a circle by algebraic polynomials. (Russian. English summary) Zbl 0844.41007 Ukr. Mat. Zh. 46, No. 9, 1115-1122 (1994). Reviewer: R.Păltănea (Braşov) MSC: 41A10 41A29 41A25 PDFBibTeX XMLCite \textit{V. G. Budnik}, Ukr. Mat. Zh. 46, No. 9, 1115--1122 (1994; Zbl 0844.41007) Full Text: DOI
Wu, Shuntang; Hong, Dong Some properties of Bernstein polynomials on a simplex. (English) Zbl 0886.41019 J. Math. Res. Expo. 14, No. 3, 355-366 (1994). Reviewer: R.Păltănea (Braşov) MSC: 41A36 41A10 41A63 41A25 PDFBibTeX XMLCite \textit{S. Wu} and \textit{D. Hong}, J. Math. Res. Expo. 14, No. 3, 355--366 (1994; Zbl 0886.41019)
Lempel, Abraham; Seroussi, Gadiel On the derivation of spline bases. (Extended summary). (English) Zbl 0844.41010 Capocelli, Renato (ed.) et al., Sequences II. Methods in communication, security and computer science. Papers presented at the workshop, held June 17-21, 1991 in Positano, Italy. New York, NY: Springer-Verlag. 273-291 (1993). Reviewer: R.Păltănea (Braşov) MSC: 41A15 65D07 PDFBibTeX XMLCite \textit{A. Lempel} and \textit{G. Seroussi}, in: Sequences II. Methods in communication, security and computer science. Papers presented at the workshop, held June 17-21, 1991 in Positano, Italy. New York, NY: Springer-Verlag. 273--291 (1993; Zbl 0844.41010)
Malozemov, V. N.; Pevnyj, A. B. An explicit solution of a filter problem by elliptic functions. (English. Russian original) Zbl 0838.41013 Vestn. St. Petersbg. Univ., Math. 26, No. 1, 32-35 (1993); translation from Vestn. St-Peterbg. Univ., Ser. I, Mat. Mekh. Astron. 1993, No. 1, 34-37 (1993). Reviewer: R.Păltănea (Braşov) MSC: 41A20 41A50 41A29 PDFBibTeX XMLCite \textit{V. N. Malozemov} and \textit{A. B. Pevnyj}, Vestn. St. Petersbg. Univ., Math. 26, No. 1, 32--35 (1993; Zbl 0838.41013); translation from Vestn. St-Peterbg. Univ., Ser. I, Mat. Mekh. Astron. 1993, No. 1, 34--37 (1993)
Miheşan, V. G. Lipschitz constants for integral operators of the Kantorovich type. (English) Zbl 0901.41017 Acta Tech. Napocensis, Ser. Appl. Math. Mech. 35, 101-106 (1992). Reviewer: R.Păltănea (Braşov) MSC: 41A35 41A36 PDFBibTeX XMLCite \textit{V. G. Miheşan}, Acta Tech. Napocensis, Ser. Appl. Math. Mech. 35, 101--106 (1992; Zbl 0901.41017)