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Volumn 121, Issue 1, 2003, Pages 143-157

Some equivalence theorems with K-functionals

Author keywords

Cas ro means; Generalized Riesz means; K functionals; Strong converse inequality

Indexed keywords


EID: 0037357363     PISSN: 00219045     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0021-9045(02)00059-X     Document Type: Review
Times cited : (32)

References (8)
  • 1
    • 0031285766 scopus 로고    scopus 로고
    • Best approximation and K-functionals
    • W. Chen, Z. Ditzian, Best approximation and K-functionals, Acta Math. Hungar. 75 (1997) 165-208.
    • (1997) Acta Math. Hungar. , vol.75 , pp. 165-208
    • Chen, W.1    Ditzian, Z.2
  • 2
    • 21344461066 scopus 로고    scopus 로고
    • A K-functional and the rate of convergence of some linear polynomial operators
    • Z. Ditzian, A K-functional and the rate of convergence of some linear polynomial operators, Proc. Amer. Math. Soc. 124 (1996) 1773-1781.
    • (1996) Proc. Amer. Math. Soc. , vol.124 , pp. 1773-1781
    • Ditzian, Z.1
  • 3
    • 0032218727 scopus 로고    scopus 로고
    • Fractional derivatives and best approximation
    • Z. Ditzian, Fractional derivatives and best approximation, Acta Math. Hungar. 81 (1998) 323-348.
    • (1998) Acta Math. Hungar. , vol.81 , pp. 323-348
    • Ditzian, Z.1
  • 4
    • 51249161653 scopus 로고
    • Strong converse inequalities
    • Z. Ditzian, K. Ivanov, Strong converse inequalities, J. Anal. Math. 61 (1993) 61-111.
    • (1993) J. Anal. Math. , vol.61 , pp. 61-111
    • Ditzian, Z.1    Ivanov, K.2
  • 5
    • 0000769248 scopus 로고    scopus 로고
    • Averages and K-functionals related to the Laplacian
    • Z. Ditzian, K. Runovskii, Averages and K-functionals related to the Laplacian, J. Approx. Theory 97 (1999) 113-139.
    • (1999) J. Approx. Theory , vol.97 , pp. 113-139
    • Ditzian, Z.1    Runovskii, K.2
  • 8
    • 84953751498 scopus 로고
    • Cambridge University Press, Cambridge, UK
    • A. Zygmund, Trigonometric Series, Vol. 1, Cambridge University Press, Cambridge, UK, 1959.
    • (1959) Trigonometric Series , vol.1
    • Zygmund, A.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.