Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - The best approximation of Laplace operator by linear bounded operators in the space L p
AU - Koshelev, A. A.
N1 - This work was supported by the Russian Foundation for Basic Research (grant 08-01-00213).
PY - 2011/6/1
Y1 - 2011/6/1
N2 - We obtain close two-sided estimates for the best approximation of Laplace operator by linear bounded operators on the class of functions for which the square of the Laplace operator belongs to the Lp-space. We estimate the best constant in the corresponding Kolmogorov inequality and the error of the optimal recovery of values of the Laplace operator on functions from this class defined with an error. In a particular case (p = 2) we solve all three problems exactly.
AB - We obtain close two-sided estimates for the best approximation of Laplace operator by linear bounded operators on the class of functions for which the square of the Laplace operator belongs to the Lp-space. We estimate the best constant in the corresponding Kolmogorov inequality and the error of the optimal recovery of values of the Laplace operator on functions from this class defined with an error. In a particular case (p = 2) we solve all three problems exactly.
UR - http://www.scopus.com/inward/record.url?partnerID=8YFLogxK&scp=80051608667
U2 - 10.3103/S1066369X11060089
DO - 10.3103/S1066369X11060089
M3 - Article
VL - 55
SP - 53
EP - 63
JO - Russian Mathematics
JF - Russian Mathematics
SN - 1066-369X
IS - 6
ER -
ID: 38005262