On discrete analytic functions: Products, rational functions and reproducing kernels

被引:22
作者
Alpay, Daniel [1 ]
Jorgensen, Palle [2 ]
Seager, Ron [3 ]
Volok, Dan [3 ]
机构
[1] Ben Gurion Univ Negev, Dept Math, POB 653, IL-84105 Beer Sheva, Israel
[2] Univ Iowa, Dept Math, Iowa City, IA 52242 USA
[3] Kansas State Univ, Dept Math, Manhattan, KS 66506 USA
关键词
Discrete analytic functions; 2D lattice Z(2); Reproducing kernel Hilbert space; Multipliers; Cauchy integral representation; Difference operators; Lie algebra of operators; Fourier transform; Realizable linear systems; Expandable functions; Rational functions; Cauchy-Riemann equations; Cauchy-Kovalevskaya theorem; Schur analysis; Fock space;
D O I
10.1007/s12190-012-0608-2
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
We introduce a family of discrete analytic functions, called expandable discrete analytic functions, which includes discrete analytic polynomials, and define two products in this family. The first one is defined in a way similar to the CauchyKovalevskaya product of hyperholomorphic functions, and allows us to define rational discrete analytic functions. To define the second product we need a new space of entire functions which is contractively included in the Fock space. We study in this space some counterparts of Schur analysis.
引用
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页码:393 / 426
页数:34
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