Sampling theory associated with q-difference equations of the Sturm-Liouville type

被引:32
作者
Abreu, LD [1 ]
机构
[1] Univ Coimbra, Dept Math, Coimbra, Portugal
来源
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 2005年 / 38卷 / 48期
关键词
D O I
10.1088/0305-4470/38/48/005
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We will show that if the kernel K (x, t) in the representation f (t) integral(a)(0) K(x, t)u(t) d(q)t, with u is an element of L-q(2) (0, a), is a solution of a second-order q-Sturm-q Liouville boundary problem, then f admits a representation as a sampling formula of the form f (t) = Sigma(infinity)(n=0) f (lambda(n)) W (t)/[W'(lambda(n)) (t - lambda(n))], where lambda(n) is the nth eigenvalue of the associated q-Sturm-Liouville boundary problem and W(t) is the q-Wronskian of two solutions selected in a specified way.
引用
收藏
页码:10311 / 10319
页数:9
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