Dem’yanovich, Yu. K. On stability of local approximations. (Russian) Zbl 0761.41038 Metody Vychislenij 15, 120-134 (1988). MSC: 41A65 41A15 PDFBibTeX XMLCite \textit{Yu. K. Dem'yanovich}, Metody Vychisl. 15, 120--134 (1988; Zbl 0761.41038)
El-Namoury, A. R. M. On some generalized forms of a boundary value problem with retarded argument. (English) Zbl 0754.34066 J. Fac. Educ., Sect. A, Ain Shams Univ. 13, 157-165 (1988). Reviewer: R.Precup (Cluj-Napoca) MSC: 34K10 34A45 65J99 PDFBibTeX XMLCite \textit{A. R. M. El-Namoury}, J. Fac. Educ., Sect. A, Ain Shams Univ. 13, 157--165 (1988; Zbl 0754.34066)
Khadzhijski, Vanya On the best \(L_ p\)-approximation on the real line by entire functions of exponential type. (Russian. English summary) Zbl 0759.41025 God. Sofij. Univ., Fak. Mat. Mekh. 78(1984), No. 1, 73-81 (1988). MSC: 41A50 41A65 PDFBibTeX XMLCite \textit{V. Khadzhijski}, God. Sofiĭ. Univ., Fak. Mat. Mekh. 78, No. 1, 73--81 (1988; Zbl 0759.41025)
Balashova, S. D.; Plaksij, Z. T. Projection-iteration methods for solving constrained minimization problems. (English. Russian original) Zbl 0792.49004 J. Sov. Math. 66, No. 3, 2231-2235 (1993); translation from Vychisl. Prikl. Mat., Kiev 64, 3-8 (1988). MSC: 49J27 90C48 41A65 65K05 41A30 PDFBibTeX XMLCite \textit{S. D. Balashova} and \textit{Z. T. Plaksij}, J. Sov. Math. 66, No. 3, 1 (1988; Zbl 0792.49004); translation from Vychisl. Prikl. Mat., Kiev 64, 3--8 (1988) Full Text: DOI
Taĭkov, L. V. (ed.) Application of functional analysis in approximation theory. (Применение функционал’ного анализа в теории приближений.) (Russian) Zbl 0743.41002 Kalinin: Kalininskiĭ Gosudarstvennyĭ Universitet, 116 p. (1988). MSC: 41-06 00B15 46-06 41A65 41A50 41A36 41A46 41A10 PDFBibTeX XMLCite \textit{L. V. Taĭkov} (ed.), Применение функционал'ного анализа в теории приближений (Russian). Kalinin: Kalininskij Gosudarstvennyj Universitet (1988; Zbl 0743.41002)
Opic, Bohumír; Gurka, Petr On imbeddings of weighted Sobolev spaces. (English) Zbl 0732.46022 Constructive theory of functions, Proc. Int. Conf., Varna/Bulg. 1987, 360-366 (1988). MSC: 46E35 41A65 PDFBibTeX XML
Light, William A. Some more uniformly convex spaces. (English) Zbl 0732.46012 Constructive theory of functions, Proc. Int. Conf., Varna/Bulg. 1987, 292-296 (1988). MSC: 46B20 41A65 PDFBibTeX XML
Zheng, Quan On the existence of solutions for a class of nonlinear Volterra-Fredholm type integro-differential equations. (Chinese. English summary) Zbl 0732.45007 J. Southwest Teach. Univ., Ser. B 1988, No. 2, 15-22 (1988). MSC: 45N05 45J05 45L05 45G10 PDFBibTeX XMLCite \textit{Q. Zheng}, J. Southwest Teach. Univ., Ser. B 1988, No. 2, 15--22 (1988; Zbl 0732.45007)
Packel, Edward W. Do linear problems have linear optimal algorithms ? (English) Zbl 0732.41035 SIAM Rev. 30, No. 3, 388-403 (1988). Reviewer: Xie Tingfan (Hangzhou) MSC: 41A65 41A45 65J10 46B99 PDFBibTeX XMLCite \textit{E. W. Packel}, SIAM Rev. 30, No. 3, 388--403 (1988; Zbl 0732.41035) Full Text: DOI
Didkovskaya, N. V. On criteria of the Chebyshev systems of functions. (Russian) Zbl 0732.41032 Operators and their applications. (Approximation of functions, spectral theory), Interuniv. Collect. Sci. Works, Leningrad, 31-33 (1988). MSC: 41A65 PDFBibTeX XML
Stoiński, Stanisław An application of modular spaces to approximation problems. V. (English) Zbl 0729.46004 Funct. Approximatio, Comment. Math. 16, 37-49 (1988). MSC: 46A80 41A65 46E30 PDFBibTeX XMLCite \textit{S. Stoiński}, Funct. Approximatio, Comment. Math. 16, 37--49 (1988; Zbl 0729.46004)
Li, Wu Continuous selections for metric projections in C(X). II: Alternating signs. (Chinese) Zbl 0729.41034 Acta Math. Sin. 31, No. 1, 11-20 (1988). Reviewer: Zhang Ganglu (Dongying) MSC: 41A65 PDFBibTeX XMLCite \textit{W. Li}, Acta Math. Sin. 31, No. 1, 11--20 (1988; Zbl 0729.41034)
Waszak, A. Sets of approximable elements in double sequence spaces. (English) Zbl 0723.41032 Constructive theory of functions, Proc. Int. Conf., Varna/Bulg. 1987, 482-487 (1988). MSC: 41A65 46A80 40B05 PDFBibTeX XML
Mitrea, A. I. The topological structure of the set of unbounded divergence for some approximation methods. (English) Zbl 0723.41025 Mathematics and its applications, Proc. 2nd Symp., Timişoara/Rom. 1987, 98-102 (1988). Reviewer: D.K.Ugulawa (Tbilisi) MSC: 41A50 41A05 41A65 PDFBibTeX XML
Kutzarova, Denka N. On the drop property of convex sets in Banach spaces. (English) Zbl 0721.41048 Constructive theory of functions, Proc. Int. Conf., Varna/Bulg. 1987, 283-287 (1988). MSC: 41A65 PDFBibTeX XML
Sommer, Manfred; Strauss, Hans Descartes systems in Haar subspaces. (English) Zbl 0719.41033 Constructive theory of functions, Proc. Int. Conf., Varna/Bulg. 1987, 428-432 (1988). Reviewer: P.L.Papini (Bologna) MSC: 41A50 41A65 41A15 PDFBibTeX XML
Ivanov, V. I. Approximation in \(L_ p\) by means of piecewise-constant functions. (English. Russian original) Zbl 0719.41029 Math. Notes 44, No. 1-2, 523-532 (1988); translation from Mat. Zametki 44, No. 1, 64-79 (1988). Reviewer: W.W.Breckner MSC: 41A30 41A65 PDFBibTeX XMLCite \textit{V. I. Ivanov}, Math. Notes 44, No. 1--2, 523--532 (1988; Zbl 0719.41029); translation from Mat. Zametki 44, No. 1, 64--79 (1988) Full Text: DOI
Aramyan, A. M. Density of smooth and smooth finite functions in the spaces \(C^ N(\Omega)\) and \(W^ N_ p(\Omega)\). (Russian) Zbl 0717.41064 Dokl., Akad. Nauk Arm. SSR 86, No. 5, 202-204 (1988). MSC: 41A65 41A46 PDFBibTeX XMLCite \textit{A. M. Aramyan}, Dokl., Akad. Nauk Arm. SSR 86, No. 5, 202--204 (1988; Zbl 0717.41064)
Nikol’skij, S. M.; Lizorkin, P. I. Approximation of functions on the sphere. (English. Russian original) Zbl 0717.41061 Math. USSR, Izv. 30, No. 3, 599-614 (1988); translation from Izv. Akad. Nauk SSSR, Ser. Mat. 51, No. 3, 635-651 (1987). MSC: 41A65 41A50 41A17 PDFBibTeX XMLCite \textit{S. M. Nikol'skij} and \textit{P. I. Lizorkin}, Math. USSR, Izv. 30, No. 3, 599--614 (1988; Zbl 0717.41061); translation from Izv. Akad. Nauk SSSR, Ser. Mat. 51, No. 3, 635--651 (1987) Full Text: DOI
Zubiri, J. Scalarization of vector optimization problems via generalized Chebyshev norm. (English) Zbl 0716.49006 Dep. Math., Karl Marx Univ. Econ., Budapest 1988, No. 5, 39-42 (1988). MSC: 49J27 90C29 41A50 90C48 PDFBibTeX XML
Kartsatos, A. G. Applications of nonlinear perturbation theory to the existence of methods of lines for functional evolutions in reflexive Banach spaces. (English) Zbl 0716.34079 Ann. Univ. Mariae Curie-Skłodowska, Sect. A 42, 41-51 (1988). MSC: 34G20 34E10 47H20 65M20 34K05 34A45 65Q05 PDFBibTeX XMLCite \textit{A. G. Kartsatos}, Ann. Univ. Mariae Curie-Skłodowska, Sect. A 42, 41--51 (1988; Zbl 0716.34079)
Singh, M. P.; Al-Zanaidi, Mansour A. Singular perturbations in integral equations. (English) Zbl 0714.45014 Math. Stud. 51 (1983), No. 1-4, 77-94 (1988). Reviewer: J.Schönenberger-Deuel MSC: 45L05 45M05 45N05 PDFBibTeX XMLCite \textit{M. P. Singh} and \textit{M. A. Al-Zanaidi}, Math. Stud. 51, No. 1--4, 77--94 (1988; Zbl 0714.45014)
Grozev, Georgi A problem on Blaschke products. (English) Zbl 0714.41044 Constructive theory of functions, Proc. Int. Conf., Varna/Bulg. 1987, 184-189 (1988). MSC: 41A65 41A50 PDFBibTeX XML
Danielyan, Eh. A.; Tatalyan, K. R. Extremal Chebyshev problem on majorization classes of distributions with the moments from a parallelepiped. (Russian) Zbl 0713.41008 Serdica 14, No. 4, 366-373 (1988). Reviewer: O.A.Malafeev MSC: 41A50 41A65 PDFBibTeX XMLCite \textit{Eh. A. Danielyan} and \textit{K. R. Tatalyan}, Serdica 14, No. 4, 366--373 (1988; Zbl 0713.41008)
Krepkogorskij, V. L. Function spaces admitting a description in terms of a rational approximation in CMO norm. (English. Russian original) Zbl 0712.46009 Sov. Math. 32, No. 10, 31-41 (1988); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1988, No. 10(317), 23-30 (1988). MSC: 46E10 41A20 46E35 46M35 PDFBibTeX XMLCite \textit{V. L. Krepkogorskij}, Sov. Math. 32, No. 10, 31--41 (1988; Zbl 0712.46009); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1988, No. 10(317), 23--30 (1988)
Babenko, V. F. Approximate computation of scalar products. (English. Russian original) Zbl 0712.42003 Ukr. Math. J. 40, No. 1, 11-16 (1988); translation from Ukr. Mat. Zh. 40, No. 1, 15-21 (1988). MSC: 42A10 41A65 PDFBibTeX XMLCite \textit{V. F. Babenko}, Ukr. Math. J. 40, No. 1, 11--16 (1988; Zbl 0712.42003); translation from Ukr. Mat. Zh. 40, No. 1, 15--21 (1988) Full Text: DOI
Nikol’skij, S. M.; Lizorkin, P. I. Classes of functions constructed on the basis of averaging. (English. Russian original) Zbl 0711.46027 Sib. Math. J. 29, No. 5, 831-840 (1988); translation from Sib. Mat. Zh. 29, No. 5(171), 181-190 (1988). MSC: 46E35 41A30 41A65 PDFBibTeX XMLCite \textit{S. M. Nikol'skij} and \textit{P. I. Lizorkin}, Sib. Math. J. 29, No. 5, 831--840 (1988; Zbl 0711.46027); translation from Sib. Mat. Zh. 29, No. 5(171), 181--190 (1988) Full Text: DOI
Anastassiou, George A. The rate of weak convergence of convex type positive finite measure. (English) Zbl 0709.41010 J. Math. Anal. Appl. 136, No. 1, 229-248 (1988). Reviewer: M.A.Jiménez MSC: 41A25 41A65 41A36 PDFBibTeX XMLCite \textit{G. A. Anastassiou}, J. Math. Anal. Appl. 136, No. 1, 229--248 (1988; Zbl 0709.41010) Full Text: DOI
Buslaev, A. P. [de Boor, Carl] Diameters of random vectors and their applications in approximation theory. (English. Russian original) Zbl 0708.41030 Math. Notes 43, No. 4, 273-287 (1988); translation from Mat. Zametki 43, No. 4, 474-497 (1988). Reviewer: B.Opic MSC: 41A65 41A15 41A55 PDFBibTeX XMLCite \textit{A. P. Buslaev}, Math. Notes 43, No. 4, 273--287 (1988; Zbl 0708.41030); translation from Mat. Zametki 43, No. 4, 474--497 (1988) Full Text: DOI
Temlyakov, V. N. Approximation by elements of a finite-dimensional subspace of functions from various Sobolev or Nikol’skij spaces. (English. Russian original) Zbl 0708.41018 Math. Notes 43, No. 6, 444-454 (1988); translation from Mat. Zametki 43, No. 6, 770-785 (1988). Reviewer: L.Pick MSC: 41A30 42A10 41A65 46E35 PDFBibTeX XMLCite \textit{V. N. Temlyakov}, Math. Notes 43, No. 6, 444--454 (1988; Zbl 0708.41018); translation from Mat. Zametki 43, No. 6, 770--785 (1988) Full Text: DOI
Zheludev, V. A. On approximation remainders for second and fourth order local splines. (English. Russian original) Zbl 0706.41022 Sov. Math. 32, No. 6, 50-61 (1988); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1988, No. 6(313), 37-46 (1988). Reviewer: B.Opic MSC: 41A65 41A80 PDFBibTeX XMLCite \textit{V. A. Zheludev}, Sov. Math. 32, No. 6, 50--61 (1988; Zbl 0706.41022); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1988, No. 6(313), 37--46 (1988)
Sikhov, M. B. On imbedding some classes of functions. (Russian) Zbl 0703.41031 Izv. Akad. Nauk Kaz. SSR, Ser. Fiz.-Mat. 1988, No. 1(140), 45-47 (1988). MSC: 41A65 42A05 PDFBibTeX XMLCite \textit{M. B. Sikhov}, Izv. Akad. Nauk Kaz. SSR, Ser. Fiz.-Mat. 1988, No. 1(140), 45--47 (1988; Zbl 0703.41031)
Bregvadze, D. V. On summability of general orthogonal series. (Russian. English summary) Zbl 0701.42013 Soobshch. Akad. Nauk Gruz. SSR 132, No. 2, 241-244 (1988). Reviewer: T.Šalát MSC: 42C15 40G99 41A65 PDFBibTeX XMLCite \textit{D. V. Bregvadze}, Soobshch. Akad. Nauk Gruz. SSR 132, No. 2, 241--244 (1988; Zbl 0701.42013)
Li, Wu Problems of continuous selections in C(X). IV: Intrinsic characterization. (English) Zbl 0699.41034 Acta Math. Sin. 31, No. 3, 299-308 (1988). Reviewer: Guanglu Zhang MSC: 41A65 PDFBibTeX XMLCite \textit{W. Li}, Acta Math. Sin. 31, No. 3, 299--308 (1988; Zbl 0699.41034)
Li, Wu Continuous selections for metric projections in C(X). I: Quasi-Haar subspaces. (Chinese) Zbl 0699.41032 Acta Math. Sin. 31, No. 1, 1-10 (1988). Reviewer: Guanglu Zhang MSC: 41A65 PDFBibTeX XMLCite \textit{W. Li}, Acta Math. Sin. 31, No. 1, 1--10 (1988; Zbl 0699.41032)
Rüschendorf, Ludger On symmetric functions of k variables. (English) Zbl 0699.41031 Stud. Sci. Math. Hung. 23, No. 1-2, 203-208 (1988). Reviewer: S.D.Chatterji MSC: 41A58 41A63 41A65 PDFBibTeX XMLCite \textit{L. Rüschendorf}, Stud. Sci. Math. Hung. 23, No. 1--2, 203--208 (1988; Zbl 0699.41031)
Kolyadin, V. L.; Kravchenko, V. F. On the choice of subspaces in projection methods for solving operator equations. (English. Russian original) Zbl 0698.47010 Sov. Math., Dokl. 36, No. 2, 353-355 (1988); translation from Dokl. Akad. Nauk SSSR 296, 1050-1052 (1987). Reviewer: N.A.Warsi MSC: 47A50 41A65 65F99 65J10 PDFBibTeX XMLCite \textit{V. L. Kolyadin} and \textit{V. F. Kravchenko}, Sov. Math., Dokl. 36, No. 2, 353--355 (1988; Zbl 0698.47010); translation from Dokl. Akad. Nauk SSSR 296, 1050--1052 (1987)
Stoiński, S. An application of modular spaces to approximation problems. IV. (English) Zbl 0698.46027 Ann. Soc. Math. Pol., Ser. I, Commentat. Math. 27, No. 2, 301-312 (1988). MSC: 46E30 41A65 PDFBibTeX XMLCite \textit{S. Stoiński}, Ann. Soc. Math. Pol., Ser. I, Commentat. Math. 27, No. 2, 301--312 (1988; Zbl 0698.46027)
Pai, D. V. Optimal recovery: A selective survey. (English) Zbl 0698.41025 Optimization, design of experiments and graph theory, Proc. Symp. in Honour of Prof. M.N. Vartak, Bombay/India 1986, 406-416 (1988). Reviewer: D.V.Pai MSC: 41A50 41A65 65D99 PDFBibTeX XML
Su, Weiyi Kernels of Poisson type on local fields. (English) Zbl 0697.41021 Sci. Sin., Ser. A 31, No. 6, 641-653 (1988). MSC: 41A65 42B25 PDFBibTeX XMLCite \textit{W. Su}, Sci. Sin., Ser. A 31, No. 6, 641--653 (1988; Zbl 0697.41021)
Dragomir, Sever Silvestru A characterization of elements of best approximation in real normed linear spaces. (English) Zbl 0697.41013 Stud. Univ. Babeș-Bolyai, Math. 33, No. 3, 74-80 (1988). Reviewer: D.N.Zarnadze MSC: 41A50 41A65 PDFBibTeX XMLCite \textit{S. S. Dragomir}, Stud. Univ. Babeș-Bolyai, Math. 33, No. 3, 74--80 (1988; Zbl 0697.41013)
Brown, A. L. An approximation theoretic characterization of inner product spaces. (English) Zbl 0696.46019 Functional analysis and optimization, Workshop/Miniconf., Canberra/Australia 1988, Proc. Cent. Math. Anal. Aust. Natl. Univ. 20, 16-23 (1988). Reviewer: I.Beg MSC: 46C05 41A65 54C60 PDFBibTeX XML
Schmeißer, Hans-Jürgen; Sickel, Winfried On approximation by Riesz and Abel-Poisson means in periodic Besov- Lizorkin-Triebel spaces. (English) Zbl 0695.42008 Seminar analysis of the Karl-Weierstraß-Institute of Mathematics, Berlin/GDR 1986-87, Teubner-Texte Math. 106, 327-332 (1988). Reviewer: L.Goras MSC: 42B05 41A65 PDFBibTeX XML
Arias de Reyna, Juan A real-valued homomorphism on algebras of differentiable functions. (English) Zbl 0694.46036 Proc. Am. Math. Soc. 104, No. 4, 1054-1058 (1988). MSC: 46J15 46J20 46E25 41A65 PDFBibTeX XMLCite \textit{J. Arias de Reyna}, Proc. Am. Math. Soc. 104, No. 4, 1054--1058 (1988; Zbl 0694.46036) Full Text: DOI
Aramyan, A. M. On the zero continuation of functions from the spaces \(C^{\vec {\;}l}_ p(\Omega)\) and \(W^{\vec {\;}l}_ p(\Omega)\). (English. Russian original) Zbl 0694.41045 Sov. J. Contemp. Math. Anal., Arm. Acad. Sci. 23, No. 2, 75-89 (1988); translation from Izv. Akad. Nauk Arm. SSR, Mat. 23, No. 2, 173-186 (1988). MSC: 41A65 PDFBibTeX XMLCite \textit{A. M. Aramyan}, Sov. J. Contemp. Math. Anal., Arm. Acad. Sci. 23, No. 2, 75--89 (1988; Zbl 0694.41045); translation from Izv. Akad. Nauk Arm. SSR, Mat. 23, No. 2, 173--186 (1988)
Schwenker, Friedhelm Integraldarstellung schwacher Markov-Systeme. (Integral representation of weak Markov systems). (German) Zbl 0693.60060 Osnabrück: Univ., FB Math./Inf., Diss. 78 S. (1988). Reviewer: B.Crstici MSC: 60J20 41A65 41A50 PDFBibTeX XML
Wu, Congxin; Sun, Huiying On complex uniform convexity of Musielak-Orlicz spaces. (Chinese. English summary) Zbl 0693.41037 Northeast. Math. J. 4, No. 4, 389-396 (1988). MSC: 41A65 PDFBibTeX XMLCite \textit{C. Wu} and \textit{H. Sun}, Northeast. Math. J. 4, No. 4, 389--396 (1988; Zbl 0693.41037)
Giles, J. R. Differentiability of distance functions and a proximinal property inducing convexity. (English) Zbl 0692.41036 Proc. Am. Math. Soc. 104, No. 2, 458-464 (1988). MSC: 41A65 46B20 PDFBibTeX XMLCite \textit{J. R. Giles}, Proc. Am. Math. Soc. 104, No. 2, 458--464 (1988; Zbl 0692.41036) Full Text: DOI
Fernández, J. L. On qualitative Korovkin theorems with a-distance. (English) Zbl 0692.41035 Approximation and optimization, Proc. Int. Semin., Havana/Cuba 1987, Lect. Notes Math. 1354, 136-139 (1988). Reviewer: T.D.Narang MSC: 41A65 41A50 41A36 PDFBibTeX XML
Ditzian, Z.; Totik, V. Remarks on Besov spaces and best polynomial approximation. (English) Zbl 0692.41008 Proc. Am. Math. Soc. 104, No. 4, 1059-1066 (1988). MSC: 41A10 41A50 41A65 41A17 41A27 26A16 PDFBibTeX XMLCite \textit{Z. Ditzian} and \textit{V. Totik}, Proc. Am. Math. Soc. 104, No. 4, 1059--1066 (1988; Zbl 0692.41008) Full Text: DOI
Wang, Yuwen Some approximation and control problems in Orlicz spaces. Geometry of Orlicz space. III. (English) Zbl 0691.46017 Function spaces, Proc. Int. Conf., Poznań/Poland 1986, Teubner-Texte Math. 103, 41-45 (1988). Reviewer: G.O.Okikiolu MSC: 46E30 46B25 49J27 PDFBibTeX XML
Lipshitz, Leonard; Rubel, Lee A. Corrigendum to: “A differentially algebraic replacement theorem, and analog computability”. (English) Zbl 0691.34010 Proc. Am. Math. Soc. 104, No. 2, 668 (1988). MSC: 65J99 34A45 68U99 PDFBibTeX XMLCite \textit{L. Lipshitz} and \textit{L. A. Rubel}, Proc. Am. Math. Soc. 104, No. 2, 668 (1988; Zbl 0691.34010) Full Text: DOI
Zagrodny, Dariusz Approximate mean value theorem for upper subderivatives. (English) Zbl 0689.49017 Nonlinear Anal., Theory Methods Appl. 12, No. 12, 1413-1428 (1988). Reviewer: D.Zagrodny MSC: 49J52 49K27 26E15 39B72 41A65 PDFBibTeX XMLCite \textit{D. Zagrodny}, Nonlinear Anal., Theory Methods Appl. 12, No. 12, 1413--1428 (1988; Zbl 0689.49017) Full Text: DOI
Xiao, Yingkun Approximation theory in Orlicz-Sobolev spaces. (Chinese. English summary) Zbl 0688.41042 J. Jiangxi Norm. Univ., Nat. Sci. Ed. 12, No. 4, 1-4 (1988). MSC: 41A65 46E39 PDFBibTeX XMLCite \textit{Y. Xiao}, J. Jiangxi Norm. Univ., Nat. Sci. Ed. 12, No. 4, 1--4 (1988; Zbl 0688.41042)
Burenkov, V. I. The theorem on repeated norms for Nikol’skij-Besov spaces and its application. (Russian) Zbl 0688.41041 Tr. Mat. Inst. Steklova 181, 27-39 (1988). Reviewer: A.V.Bukhvalov MSC: 41A65 46E35 PDFBibTeX XMLCite \textit{V. I. Burenkov}, Tr. Mat. Inst. Steklova 181, 27--39 (1988; Zbl 0688.41041)
Shen, Xiechang On the approximation in Bers spaces. (Chinese. English summary) Zbl 0687.41032 Adv. Math., Beijing 17, No. 4, 337-350 (1988). MSC: 41A65 41A20 41A10 30E10 PDFBibTeX XMLCite \textit{X. Shen}, Adv. Math., Beijing 17, No. 4, 337--350 (1988; Zbl 0687.41032)
Bosznay, Adam P. On a theorem of M. Feder. (English) Zbl 0684.41024 Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Math. 31, 219-221 (1988). Reviewer: Guanglu Zhang MSC: 41A65 41A50 46B20 PDFBibTeX XMLCite \textit{A. P. Bosznay}, Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Math. 31, 219--221 (1988; Zbl 0684.41024)
Pereira Bertolo, Nativi Viana p-atoms and spaces of homogeneous type. (Portuguese. English summary) Zbl 0683.41042 Rev. Mat. Estat. 6, 43-49 (1988). MSC: 41A65 PDFBibTeX XMLCite \textit{N. V. Pereira Bertolo}, Rev. Mat. Estat. 6, 43--49 (1988; Zbl 0683.41042)
Borwein, Jonathan M.; Fitzpatrick, Simon A problem on nearest points in Banach spaces. (English) Zbl 0683.41041 Functional analysis and optimization, Workshop/Miniconf., Canberra/Australia 1988, Proc. Cent. Math. Anal. Aust. Natl. Univ. 20, 203-204 (1988). Reviewer: Guanglu Zhang MSC: 41A65 41A50 46B20 PDFBibTeX XML
Fang, Gensun On n-width of non-periodic function class \(W^ rH^{\omega}\). (Chinese. English summary) Zbl 0683.41032 J. Math. Res. Expo. 8, No. 3, 454-456 (1988). MSC: 41A46 41A65 PDFBibTeX XMLCite \textit{G. Fang}, J. Math. Res. Expo. 8, No. 3, 454--456 (1988; Zbl 0683.41032)
Chui, Charles K.; Shi, Xian-Liang Characterization of weights in best rational weighted approximations of piecewise smooth functions. II. (English) Zbl 0683.41026 J. Approximation Theory 54, No. 2, 196-209 (1988). Reviewer: G.D.Taylor MSC: 41A20 41A25 30E10 41A65 PDFBibTeX XMLCite \textit{C. K. Chui} and \textit{X.-L. Shi}, J. Approx. Theory 54, No. 2, 196--209 (1988; Zbl 0683.41026) Full Text: DOI
Chui, Charles K.; Shi, Xian-Liang Characterization of weights in best rational weighted approximation of piecewise smooth functions. I. (English) Zbl 0683.41025 J. Approximation Theory 54, No. 2, 180-195 (1988). Reviewer: G.D.Taylor MSC: 41A20 41A25 41A65 PDFBibTeX XMLCite \textit{C. K. Chui} and \textit{X.-L. Shi}, J. Approx. Theory 54, No. 2, 180--195 (1988; Zbl 0683.41025) Full Text: DOI
Rodríguez Marín, Luis Approximations of differentiable functions in locally convex spaces. (English) Zbl 0682.41045 Arch. Math. 50, No. 4, 360-368 (1988). Reviewer: H.R.Dowson MSC: 41A65 46A03 PDFBibTeX XMLCite \textit{L. Rodríguez Marín}, Arch. Math. 50, No. 4, 360--368 (1988; Zbl 0682.41045) Full Text: DOI
Musielak, Helena On some conditions connected with approximation in generalized Orlicz spaces. (English) Zbl 0682.41044 Funct. Approx., Comment. Math. 16, 159-164 (1988). Reviewer: P.L.Papini MSC: 41A65 46E30 41A30 PDFBibTeX XMLCite \textit{H. Musielak}, Funct. Approximatio, Comment. Math. 16, 159--164 (1988; Zbl 0682.41044)
Fabiś, Florian Approximation in generalized Orlicz spaces. (English) Zbl 0682.41043 Funct. Approx., Comment. Math. 16, 113-123 (1988). Reviewer: P.L.Papini MSC: 41A65 46E30 42B20 PDFBibTeX XMLCite \textit{F. Fabiś}, Funct. Approximatio, Comment. Math. 16, 113--123 (1988; Zbl 0682.41043)
Dunham, Charles B. Subsets of unicity in uniform approximation. (English) Zbl 0682.41042 Approximation and optimization, Proc. Int. Semin., Havana/Cuba 1987, Lect. Notes Math. 1354, 131-135 (1988). Reviewer: P.L.Papini MSC: 41A65 41A29 41A52 PDFBibTeX XML
Prolla, Joao B.; Chiacchio, Ary O.; Roversi, Maria Suelli M. Chebyshev centers in spaces of continuous functions. (English) Zbl 0682.41041 Arch. Math. 50, No. 4, 371-379 (1988). Reviewer: H.R.Dowson MSC: 41A65 41A50 PDFBibTeX XMLCite \textit{J. B. Prolla} et al., Arch. Math. 50, No. 4, 371--379 (1988; Zbl 0682.41041) Full Text: DOI
Brown, A. L. On the connectedness properties of suns in finite dimensional spaces. (English) Zbl 0682.41040 Functional analysis and optimization, Workshop/Miniconf., Canberra/Australia 1988, Proc. Cent. Math. Anal. Aust. Natl. Univ. 20, 1-15 (1988). Reviewer: S.Cobzaş MSC: 41A65 46B20 41A50 PDFBibTeX XML
Kenderov, P. S.; Ribarska, N. K. Generic uniqueness of the solution of “max min” problems. (English) Zbl 0681.54009 Optimization, parallel processing and applications. Proc. Conf. Oper. Res., Oberwolfach/FRG 1987, Workshop Adv. Comput. Tech. Parallel Process. Optimization, Karlsruhe/FRG 1987, Lect. Notes Econ. Math. Syst. 304, 41-48 (1988). Reviewer: A.P.Bosznay MSC: 54C35 49J35 41A65 PDFBibTeX XML
Froelich, John Compact operators, invariant subspaces, and spectral synthesis. (English) Zbl 0681.47019 J. Funct. Anal. 81, No. 1, 1-37 (1988). Reviewer: V.Wrobel MSC: 47L30 47A15 47B06 43A45 PDFBibTeX XMLCite \textit{J. Froelich}, J. Funct. Anal. 81, No. 1, 1--37 (1988; Zbl 0681.47019) Full Text: DOI
Kołdobski, A. L.; Odinec, V. P. On minimal projections generated by isometries of Banach spaces. (English) Zbl 0681.46022 Ann. Soc. Math. Pol., Ser. I, Commentat. Math. 27, No. 2, 265-274 (1988). Reviewer: S.V.Kislyakov MSC: 46B20 41A65 PDFBibTeX XMLCite \textit{A. L. Kołdobski} and \textit{V. P. Odinec}, Ann. Soc. Math. Pol., Ser. I, Commentat. Math. 27, No. 2, 265--274 (1988; Zbl 0681.46022)
Xiao, Changbai The Korovkin approximation in \(C_ 0(X)\). (Chinese. English summary) Zbl 0681.41024 J. Nanjing Univ., Nat. Sci. Ed. 24, No. 2, 178-180 (1988). MSC: 41A65 PDFBibTeX XML
Li, Wu Characterization of continuous selections for metric projections in C(X). (English) Zbl 0679.41021 Sci. Sin., Ser. A 31, No. 9, 1039-1052 (1988). Reviewer: M.B.A.Babaev MSC: 41A65 PDFBibTeX XMLCite \textit{W. Li}, Sci. Sin., Ser. A 31, No. 9, 1039--1052 (1988; Zbl 0679.41021)
Deeb, W.; Khalil, R. Best approximation in L(X,Y). (English) Zbl 0678.41029 Math. Proc. Camb. Philos. Soc. 104, No. 3, 527-531 (1988). Reviewer: A.L.Brown MSC: 41A65 41A50 46A32 46B22 PDFBibTeX XMLCite \textit{W. Deeb} and \textit{R. Khalil}, Math. Proc. Camb. Philos. Soc. 104, No. 3, 527--531 (1988; Zbl 0678.41029) Full Text: DOI
Bartelt, Martin; Swetits, John Uniform strong unicity constants for subsets of C(X). (English) Zbl 0678.41028 J. Approximation Theory 55, No. 3, 304-317 (1988). Reviewer: A.L.Brown MSC: 41A52 41A65 PDFBibTeX XMLCite \textit{M. Bartelt} and \textit{J. Swetits}, J. Approx. Theory 55, No. 3, 304--317 (1988; Zbl 0678.41028) Full Text: DOI
Dragomir, Sever Silvestru Representation of continuous linear functionals on smooth normed linear spaces. (English) Zbl 0677.46004 Math., Rev. Anal. Numér. Théor. Approximation, Anal. Numér. Théor. Approximation 17, No. 2, 125-132 (1988). MSC: 46B10 46C99 41A65 41A50 PDFBibTeX XMLCite \textit{S. S. Dragomir}, Math. Rev. Anal. Numér. Théor. Approximation, Anal. Numér. Théor. Approximation 17, No. 2, 125--132 (1988; Zbl 0677.46004)
Ziemer, William P. Uniform differentiability of Sobolev functions. (English) Zbl 0677.41033 Indiana Univ. Math. J. 37, No. 4, 789-799 (1988). Reviewer: W.P.Ziemer MSC: 41A65 PDFBibTeX XMLCite \textit{W. P. Ziemer}, Indiana Univ. Math. J. 37, No. 4, 789--799 (1988; Zbl 0677.41033) Full Text: DOI
Cornea, Octav Weak discontinuities and discrete approximations. (English) Zbl 0676.54013 An. Univ. Bucur., Mat. 37, No. 3, 12-17 (1988). MSC: 54C05 41A65 26A15 PDFBibTeX XMLCite \textit{O. Cornea}, An. Univ. Bucur., Mat. 37, No. 3, 12--17 (1988; Zbl 0676.54013)
Franchetti, C.; Roversi, S. The geometry of hypercircles in Banach spaces. (English) Zbl 0676.46010 Boll. Unione Mat. Ital., VII. Ser., B 2, No. 4, 795-816 (1988). Reviewer: A.J.Ellis MSC: 46B20 41A65 PDFBibTeX XMLCite \textit{C. Franchetti} and \textit{S. Roversi}, Boll. Unione Mat. Ital., VII. Ser., B 2, No. 4, 795--816 (1988; Zbl 0676.46010)
Chen, Zhiqiang An equivalent condition of continuous metric selection. (English) Zbl 0676.41039 J. Math. Anal. Appl. 136, No. 1, 298-303 (1988). Reviewer: W.W.Breckner MSC: 41A65 PDFBibTeX XMLCite \textit{Z. Chen}, J. Math. Anal. Appl. 136, No. 1, 298--303 (1988; Zbl 0676.41039) Full Text: DOI
Prolla, João B. A generalized Bernstein approximation theorem. (English) Zbl 0676.41038 Math. Proc. Camb. Philos. Soc. 104, No. 2, 317-330 (1988). Reviewer: N.Nashed MSC: 41A65 41A36 41A10 PDFBibTeX XMLCite \textit{J. B. Prolla}, Math. Proc. Camb. Philos. Soc. 104, No. 2, 317--330 (1988; Zbl 0676.41038) Full Text: DOI
Baronti, Marco; Papini, Pier Luigi Nearby sets and centers. (English) Zbl 0676.41037 Approximation and optimization, Proc. Int. Semin., Havana/Cuba 1987, Lect. Notes Math. 1354, 98-105 (1988). Reviewer: S.Cobzaş MSC: 41A65 41A50 PDFBibTeX XML
Sahab, S. A.; Khan, M. S.; Sessa, S. A result in best approximation theory. (English) Zbl 0676.41031 J. Approximation Theory 55, No. 3, 349-351 (1988). Reviewer: I.Şerb MSC: 41A50 41A65 47H10 PDFBibTeX XMLCite \textit{S. A. Sahab} et al., J. Approx. Theory 55, No. 3, 349--351 (1988; Zbl 0676.41031) Full Text: DOI
Neubauer, A. Tikhonov-regularization of ill-posed linear operator equations on closed convex sets. (English) Zbl 0676.41028 J. Approximation Theory 53, No. 3, 304-320 (1988). Reviewer: D.Wulbert MSC: 41A45 41A65 41A50 PDFBibTeX XMLCite \textit{A. Neubauer}, J. Approx. Theory 53, No. 3, 304--320 (1988; Zbl 0676.41028) Full Text: DOI
Illán, J. On the rational approximation of \(H^ p\) functions in the \(L_ p(\mu)\) metric. (English) Zbl 0676.41020 Approximation and optimization, Proc. Int. Semin., Havana/Cuba 1987, Lect. Notes Math. 1354, 155-163 (1988). Reviewer: J.Illán MSC: 41A20 41A65 41A50 41A25 PDFBibTeX XML
Smarzewski, Ryszard Strong coapproximation in Banach spaces. (English) Zbl 0675.41049 J. Approximation Theory 55, No. 3, 296-303 (1988). Reviewer: A.L.Brown MSC: 41A65 PDFBibTeX XMLCite \textit{R. Smarzewski}, J. Approx. Theory 55, No. 3, 296--303 (1988; Zbl 0675.41049) Full Text: DOI
Smarzewski, Ryszard Strong uniqueness of best approximations in an abstract \(L_ 1\) space. (English) Zbl 0675.41048 J. Math. Anal. Appl. 136, No. 2, 347-351 (1988). Reviewer: A.L.Brown MSC: 41A65 41A50 PDFBibTeX XMLCite \textit{R. Smarzewski}, J. Math. Anal. Appl. 136, No. 2, 347--351 (1988; Zbl 0675.41048) Full Text: DOI
Alonso, Javier; Benítez, Carlos Some characteristic and non-characteristic properties of inner product spaces. (English) Zbl 0675.41047 J. Approximation Theory 55, No. 3, 318-325 (1988). Reviewer: L.Ciobanu MSC: 41A65 PDFBibTeX XMLCite \textit{J. Alonso} and \textit{C. Benítez}, J. Approx. Theory 55, No. 3, 318--325 (1988; Zbl 0675.41047) Full Text: DOI Link
Avdispahić, M. Note on approximation in locally compact Abelian groups. (English) Zbl 0675.41044 Funct. Approx., Comment. Math. 16, 191-196 (1988). Reviewer: H.Yamaguchi MSC: 41A65 43A70 22A10 PDFBibTeX XMLCite \textit{M. Avdispahić}, Funct. Approximatio, Comment. Math. 16, 191--196 (1988; Zbl 0675.41044)
Fang, Gensun PF density, Chakhkiev’s condition and some related extremal problems. (English) Zbl 0675.41040 Kexue Tongbao, Sci. Bull. Ed. 33, No. 19, 1584-1587 (1988). Reviewer: L.Ciobanu MSC: 41A65 41A46 PDFBibTeX XML
Pan, Wenxi A generalization of Wiener’s theorems concerning the closure of translating span in \(L^ 2(-\infty,\infty)\). (English) Zbl 0675.41039 Approximation Theory Appl. 4, No. 1, 9-11 (1988). Reviewer: L.Ciobanu MSC: 41A65 42A38 PDFBibTeX XMLCite \textit{W. Pan}, Approximation Theory Appl. 4, No. 1, 9--11 (1988; Zbl 0675.41039)
Balashova, S. D.; Plaksij, Z. T. Projection-iterative methods for the solution of minimization problems with constraints. (Russian) Zbl 0673.49005 Vychisl. Prikl. Mat., Kiev 64, 3-8 (1988). Reviewer: M.Krüger MSC: 49J27 90C48 41A65 65K05 41A30 PDFBibTeX XMLCite \textit{S. D. Balashova} and \textit{Z. T. Plaksij}, Vychisl. Prikl. Mat. 64, 3--8 (1988; Zbl 0673.49005)
Davis, Brett Differentiability of distance functions in normed linear spaces with uniformly Gateaux differentiable norm. (English) Zbl 0673.41036 Functional analysis and optimization, Workshop/Miniconf., Canberra/Australia 1988, Proc. Cent. Math. Anal. Aust. Natl. Univ. 20, 34-38 (1988). MSC: 41A65 PDFBibTeX XML
Lima, Åsvald; Yost, David Absolutely Chebyshev subspaces. (English) Zbl 0673.41035 Functional analysis and optimization, Workshop, Miniconf., Canberra/Australia 1988, Proc. Cent. Math. Anal. Aust. Natl. Univ. 20, 116-127 (1988). MSC: 41A65 46B20 PDFBibTeX XML
Fitzpatrick, Simon; Giles, John Nearest points in convex sets in normed linear spaces. (English) Zbl 0673.41034 Functional analysis and optimization, Workshop/ Miniconf., Canberra/Australia 1988, Proc. Cent. Math. Anal. Aust. Natl. Univ. 20, 66-72 (1988). MSC: 41A65 46B20 PDFBibTeX XML
Khavinson, Dmitry Duality and uniform approximation by solutions of elliptic equations. (English) Zbl 0673.41028 Operator theory and functional analysis, Proc. Conf., Mesa/Ariz. 1987, Oper. Theory, Adv. Appl. 35, 129-141 (1988). MSC: 41A50 35J15 41A65 PDFBibTeX XML
Chui, C. K.; Shen, Xiechang On completeness of the system \(\{(1-{\bar\alpha}_ jz)^{-\alpha -1}\}\) in \(A^ P(\Phi)\). (English) Zbl 0672.42019 Approximation Theory Appl. 4, No. 2, 1-8 (1988). Reviewer: J.Musielak MSC: 42C30 41A65 46E15 PDFBibTeX XMLCite \textit{C. K. Chui} and \textit{X. Shen}, Approximation Theory Appl. 4, No. 2, 1--8 (1988; Zbl 0672.42019)
Ziętak, K. Properties of the strict Chebyshev solutions of the linear matrix equation \(AX+YB=C\). (English) Zbl 0672.41019 J. Approximation Theory 55, No. 2, 140-149 (1988). Reviewer: Zhang Ganglu (Dongying) MSC: 41A50 41A65 34A30 PDFBibTeX XMLCite \textit{K. Ziętak}, J. Approx. Theory 55, No. 2, 140--149 (1988; Zbl 0672.41019) Full Text: DOI
Chuyan, O. R. The relationship between guaranteed results in sequential and non- sequential algorithms. (English. Russian original) Zbl 0671.65041 U.S.S.R. Comput. Math. Math. Phys. 28, No. 2, 76-81 (1988); translation from Zh. Vychisl. Mat. Mat. Fiz. 28, No. 3, 420-428 (1988). MSC: 65J15 41A65 47J25 PDFBibTeX XMLCite \textit{O. R. Chuyan}, U.S.S.R. Comput. Math. Math. Phys. 28, No. 2, 76--81 (1988; Zbl 0671.65041); translation from Zh. Vychisl. Mat. Mat. Fiz. 28, No. 3, 420--428 (1988) Full Text: DOI
Ginchev, Ivan A theorem on the subdifferential calculation. (English) Zbl 0671.49025 Demonstr. Math. 21, No. 3, 713-725 (1988). MSC: 49K27 49J52 41A50 PDFBibTeX XMLCite \textit{I. Ginchev}, Demonstr. Math. 21, No. 3, 713--725 (1988; Zbl 0671.49025) Full Text: DOI