Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - APPROXIMATION BY LOCAL PARABOLIC SPLINE SCONSTRUCTED ON THE BASIS OF INTERPOLATIONIN THE MEAN
AU - Strelkova, Elena V.
PY - 2017
Y1 - 2017
N2 - The paper deals with approximative and form-retaining properties of the local parabolic splines of the form S(x)=∑jyjB2(x-jh), (h>0), where B2 is a normalized parabolic spline with the uniform nodes and functionals yj=yj(f) are given for an arbitrary function f defined on R by means of the equalities yj=1/h1∫-h1/2h1/2f(jh+t)dt (j∈Z). On the class W2∞ of functions under 0 < h1≤ 2h, the approximation error value is calculated exactly for thecase of approximation by such splines in the uniform metrics.
AB - The paper deals with approximative and form-retaining properties of the local parabolic splines of the form S(x)=∑jyjB2(x-jh), (h>0), where B2 is a normalized parabolic spline with the uniform nodes and functionals yj=yj(f) are given for an arbitrary function f defined on R by means of the equalities yj=1/h1∫-h1/2h1/2f(jh+t)dt (j∈Z). On the class W2∞ of functions under 0 < h1≤ 2h, the approximation error value is calculated exactly for thecase of approximation by such splines in the uniform metrics.
UR - https://elibrary.ru/item.asp?id=29728777
U2 - 10.15826/umj.2017.1.007
DO - 10.15826/umj.2017.1.007
M3 - Article
VL - 3
SP - 81
EP - 94
JO - Ural Mathematical Journal
JF - Ural Mathematical Journal
SN - 2414-3952
IS - 1 (4)
ER -
ID: 6567448