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arXiv 1012.1187math.FA
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Korovkin型定理与一类正线性算子的迭代

Korovkin type theorem and iterates of certain positive linear operators

N. I. Mahmudov

摘要:

本文证明了一般正线性算子$T:C\left[ 0,1\right] \rightarrow C\left[ 0,1\right] $迭代的Korovkin型定理,并给出了光滑模的定量估计.特别地,我们证明了在某些自然条件下迭代$T^{m}:C\left[ 0,1\right] \rightarrow C\left[ 0,1\right] $强收敛于原算子$T$的不动点.这些结果可以应用于几个著名的算子,我们在这里提出了$q$ -MKZ算子,$q$ -Stancu算子,真正的$q$ -Bernstein-Durrmeyer算子和Cesaro算子.

英文摘要:

In this paper we prove Korovkin type theorem for iterates of general positive linear operators $T:C\left[ 0,1\right] \rightarrow C\left[ 0,1\right] $ and derive quantitative estimates in terms of modulus of smoothness. In particular, we show that under some natural conditions the iterates $T^{m}:C\left[ 0,1\right] \rightarrow C\left[ 0,1\right] $ converges strongly to a fixed point of the original operator $T$. The results can be applied to several well-known operators; we present here the $q$-MKZ operators, the $q$-Stancu operators, the genuine $q$-Bernstein--Durrmeyer operators and the Cesaro operators.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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