One-sided invertibility of discrete operators and their applications

被引:1
|
作者
Asekritova, Irina [1 ]
Karlovich, Yuri [2 ]
Kruglyak, Natan [1 ]
机构
[1] Linkoping Univ, Dept Math MAI, S-58183 Linkoping, Sweden
[2] Univ Autonoma Estado Morelos, Inst Invest Ciencias Basicas & Aplicadas, Ctr Invest Ciencias, Ave Univ 1001,Col Chamilpa, Cuernavaca 62209, Morelos, Mexico
关键词
One-sided and two-sided invertibility; Discrete operator; Functional operator; Bi-Lipschitz homeomorphism; Real interpolation;
D O I
10.1007/s00010-017-0522-7
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
For p is an element of [1, infinity], we establish criteria for the one-sided invertibility of binomial discrete difference operators A = aI - bV on the space l(p) = l(p)(Z), where a, b is an element of l(infinity), I is the identity operator and the isometric shift operator V is given on functions f. lp by (Vf)(n) = f (n+ 1) for all n is an element of Z. Applying these criteria, we obtain criteria for the one-sided invertibility of binomial functional operators A = aI - bU(alpha) on the Lebesgue space L-p(R+) for every p is an element of [1, infinity], where a, b is an element of L-infinity (R+), a is an orientation-preserving bi-Lipschitz homeomorphism of [0, +infinity] onto itself with only two fixed points 0 and infinity, and U-alpha is the isometric weighted shift operator on L-p(R+) given by U(alpha)f = (alpha')(1/p)(f circle alpha). Applications of binomial discrete operators to interpolation theory are given.
引用
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页码:39 / 73
页数:35
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