Approximation of cosine functions and Rogosinski type operators

被引：0
|
作者：
Campiti, Michele [1 ]
Mazzone, Giusy [1 ]
Tacelli, Cristian [1 ]
机构：
[1] Univ Salento, Dept Math, POB 193, I-73100 Lecce, Italy
来源：
STUDIA UNIVERSITATIS BABES-BOLYAI MATHEMATICA | 2011年 / 56卷 / 02期
关键词：
Convergence of iterates of trigonometric polynomials; Rogosinski operators; representation of cosine functions;
D O I：
暂无
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
We study some quantitative estimates of the convergence of the iterates of some Rogosinski type operators to their associated cosine functions. We also consider a general cosine counterpart of the quantitative version of Trotter's theorem on the approximation of C-0-semigroups.
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页码：261 / 272
页数：12
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