Approximation of upper bound for matrix operators on the Fibonacci weighted sequence spaces

被引:12
|
作者
Talebi, Gholamreza [1 ]
Dehghan, Mohammad Ali [1 ]
机构
[1] Vali E Asr Univ Rafsanjan, Dept Math, Fac Math, Rafsanjan, Iran
来源
LINEAR & MULTILINEAR ALGEBRA | 2016年 / 64卷 / 02期
关键词
Fibonacci numbers; sequence space; norm; Hausdorff matrices; Norlund matrices;
D O I
10.1080/03081087.2015.1031074
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
Let A = (a(n, k))(n, k >= 0) be a non-negative matrix. Denote by parallel to A parallel to(lp)(w),F-w, (p), the infimum of those U satisfying the following inequality: {Sigma(infinity)(n=0) wn (Sigma(n)(k=0) f(k)(2)/f(n)f(n+1) Sigma(infinity)(i=0) a(k),(i)x(i))(p)}(1/p) <= U(Sigma(infinity)(n=0) w(n)x(n)(p))(1/p) , where x >= 0, x is an element of l(p)(w) and {f(n)}(n=0)(infinity) is the Fibonacci numbers sequence and {w(n)}(n=0)(infinity) is a decreasing, non-negative sequence of real numbers. In this paper, first, the Fibonacci weighted sequence space F-w,F- p(1 <= p < infinity) is introduced. Then, we focus on the evaluation of parallel to A parallel to l(p)(w), F-w,F- p, where A is the Hausdorff matrix operator or the Norlund matrix operator or the transpose of the Norlund matrix operator. For the case of Hausdorff matrices, a Hardy-type formula is established as an upper estimate. Also, a general upper estimate is established for the case of Norlund matrices and their transpose. In particular, we apply our results to Cesaro matrices, Holder matrices, Euler matrices and Gamma matrices.
引用
收藏
页码:196 / 207
页数:12
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