On Korovkin type theorem in the space of locally integrable functions

A. D. Gadjiev; R. O. Efendiyev; E. Ibikli

Czechoslovak Mathematical Journal (2003)

  • Volume: 53, Issue: 1, page 45-53
  • ISSN: 0011-4642

Abstract

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It is shown that a Korovkin type theorem for a sequence of linear positive operators acting in weighted space L p , w ( l o c ) does not hold in all this space and is satisfied only on some subspace.

How to cite

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Gadjiev, A. D., Efendiyev, R. O., and Ibikli, E.. "On Korovkin type theorem in the space of locally integrable functions." Czechoslovak Mathematical Journal 53.1 (2003): 45-53. <http://eudml.org/doc/30757>.

@article{Gadjiev2003,
abstract = {It is shown that a Korovkin type theorem for a sequence of linear positive operators acting in weighted space $L_\{p,w\}(\{\mathrm \{l\}oc\})$ does not hold in all this space and is satisfied only on some subspace.},
author = {Gadjiev, A. D., Efendiyev, R. O., Ibikli, E.},
journal = {Czechoslovak Mathematical Journal},
keywords = {linear positive operators; Korovkin type theorem; weighted $L_p(\{\mathrm \{l\}oc\})$ spaces; linear positive operators; Korovkin type theorem; weighted spaces},
language = {eng},
number = {1},
pages = {45-53},
publisher = {Institute of Mathematics, Academy of Sciences of the Czech Republic},
title = {On Korovkin type theorem in the space of locally integrable functions},
url = {http://eudml.org/doc/30757},
volume = {53},
year = {2003},
}

TY - JOUR
AU - Gadjiev, A. D.
AU - Efendiyev, R. O.
AU - Ibikli, E.
TI - On Korovkin type theorem in the space of locally integrable functions
JO - Czechoslovak Mathematical Journal
PY - 2003
PB - Institute of Mathematics, Academy of Sciences of the Czech Republic
VL - 53
IS - 1
SP - 45
EP - 53
AB - It is shown that a Korovkin type theorem for a sequence of linear positive operators acting in weighted space $L_{p,w}({\mathrm {l}oc})$ does not hold in all this space and is satisfied only on some subspace.
LA - eng
KW - linear positive operators; Korovkin type theorem; weighted $L_p({\mathrm {l}oc})$ spaces; linear positive operators; Korovkin type theorem; weighted spaces
UR - http://eudml.org/doc/30757
ER -

References

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  2. 10.2140/pjm.1974.53.11, Pacific J.  Math. 53 (1974), 11–19. (1974) MR0393979DOI10.2140/pjm.1974.53.11
  3. 10.1016/0022-1236(81)90046-X, J.  Funct. Anal. 42 (1981), 12–28. (1981) MR0620578DOI10.1016/0022-1236(81)90046-X
  4. On the approximation of functions by linear positive operators and singular integrals, Mat. Sbornik 70 (1966), 508–517. (Russian) (1966) MR0208243
  5. The convergence problem for a sequence of positive linear operators on unbounded sets, and Theorems analogous to that of P. P.  Korovkin, Dokl. Akad. Nauk SSSR 218, no. 5. Zbl0312.41013MR0367522
  6. On P. P. Korovkin type theorems, Math. Zametki, Vol. 20 (1976). (Russian) (1976) 
  7. Real Analysis, Dover Publications, INC, New York, 1991. (1991) MR1088254
  8. 10.2140/pjm.1976.63.153, Pacific J.  Math. 63 (1976), 153–167. (1976) MR0417658DOI10.2140/pjm.1976.63.153
  9. Function Spaces, Academia, Prague, 1977. (1977) MR0482102
  10. 10.4064/sm-63-1-81-88, Studia Math. 63 (1978), 81–88. (1978) MR0508883DOI10.4064/sm-63-1-81-88
  11. 10.1016/0021-9045(83)90144-2, J. Approx. Theory 38 (1983), 81–89. (1983) MR0700880DOI10.1016/0021-9045(83)90144-2
  12. On degree of L p -approximation with positive linear operators, J. Approx. Theory 87 (1996), 239–241. (1996) MR1418496
  13. 10.1016/0021-9045(78)90087-4, J. Approx. Theory 23 (1978), 354–363. (1978) MR0509565DOI10.1016/0021-9045(78)90087-4

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