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01 natural sciences 892 0101 mathematics 866 best approximation, chebyshev systems 268 applied mathematics 259 approximation in the complex plane 228 analysis 193 more ... numerical analysis 191 mathematics(all) 181 interpolation in approximation theory 171 rate of convergence, degree of approximation 165 numerical interpolation 149 02 engineering and technology 138 rational approximation 135 pade approximation 130 algorithms for approximation of functions 122 approximation by polynomials 95 rational interpolation 90 0202 electrical engineering, electronic engineering, information engineering 89 computational mathematics 77 0103 physical sciences 76 multidimensional problems 72 0209 industrial biotechnology 70 approximation by other special function classes 70 spline approximation 64 4. education 61 abstract approximation theory (approximation in normed linear spaces and other abstract spaces) 55 continued fractions 51 computation of special functions and constants, construction of tables 48 numerical examples 45 complex-analytic aspects 44 less ...

elsevier bv 361 springer science and business media llc 286 society for industrial & applied mathematics (siam) 64 steklov mathematical institute 47 jstor 34 american mathematical society (ams) 32 more ... bulgarian academy of sciences - bas (balgarska akademiya na naukite - ban), sofia 27 wiley 27 oxford university press (oup) 26 izdatel'stvo nauka, moskva 24 springer us, new york, ny; pleiades publishing (allerton press), new york, ny; maik ``nauka/interperiodica'', moscow 24 nanjing university, department of mathematics, nanjing 23 institute of electrical and electronics engineers (ieee) 21 springer us, new york, ny 21 american mathematical society (ams), providence, ri 20 dalian university of science and technology, dalian 18 academy of sciences of the byelorussian soviet socialist republic - bssr (akademii nauk belorusskoj ssr) 14 elsevier (academic press), san diego, ca 14 taylor \& francis, abingdon, oxfordshire 14 chinese academy of sciences, institute of computational mathematics and scientific/engineering computing, beijing 13 oles honchar dnipro national university 8 springer 8 elsevier 6 mdpi ag 6 elsevier b.v. 5 ccsd 4 mdpi 4 springer us 4 academic press inc elsevier science 3 elsevier inc. 3 less ...

english 938 undetermined 837 german 14 french 3 ukrainian 2 spanish; castilian 1 more ... turkish 1 unknown 1 less ...

france 1 marseille 1 marseille, france 1

OpenAIRE 1,721 Science Citation Index Expanded 22 BASE 21 ScienceDirect 9 Directory of Open Access Journals 7 Springer Nature Journals 6 more ... JSTOR Journals 4 OAIster 4 HAL 2 PASCAL Archive 1 less ...