Journal of approximation theory

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  Año 2003, Vol. 125, Número 1

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    Incompleteness and closure of a linear span of exponential system in a weighted Banach space

    G.T. Deng

    págs. 1-9

    
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    Porosity of mutually nearest and mutually furthest points in Banach spaces

    Hong-Kun Xu, Chong Li

    págs. 10-25

    
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    On asymptotic properties of Freud¿Sobolev orthogonal polynomials

    Francisco Marcellán Español , María Alicia Cachafeiro López , Juan José Moreno Balcázar

    págs. 26-41

    
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    Extremal problems for matrix-valued polynomials on the unit circle and applications to multivariate stationary sequences

    L. Klotz, A. Lasarow

    págs. 42-62

    
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    Eigenfunctions of Durrmeyer-type modifications of Meyer¿König and Zeller operators

    Margareta Heilmann

    págs. 63-73

    
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    On strengthened Hardy and Pólya¿Knopp's inequalities

    Aleksandra ¿i¿me¿ija, Josip Pe¿ari¿, Lars Erik Persson

    págs. 74-84

    
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    Multivariate approximating averages

    Z. Ditzian, F. Dai, E. Belinsky

    págs. 85-105

    
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    Best approximation and interpolation of <f>(1+(ax)²)^¿1</f> and its transforms

    D. S. Lubinsky

    págs. 106-115

    
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    Uniform convergence of the Bieberbach polynomials in closed smooth domains of bounded boundary rotation

    Daniyal M. Israfilov

    págs. 116-130

    
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    Strong asymptotic behavior for extremal polynomials with respect to varying measures on the unit circle

    Judit Mínguez Ceniceros, Manuel Bello Hernández

    págs. 131-144