Articles

CONTINUOUSLY DECREASING SOLUTIONS FOR A GENERAL ITERATIVE EQUATION

  • Wei SONG ,
  • Lin LI
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  • 1. Department of Mathematics, Harbin Institute of Technology, Harbin 150001, China;
    2. College of Mathematics, Physics and Information Engineering, Jiaxing University, Jiaxing 314001, China

Received date: 2016-10-25

  Revised date: 2017-02-10

  Online published: 2018-02-25

Supported by

This work is supported by Zhejiang Provincial Natural Science Foundation of China under Grant No.LY18A010017 and the National Science Foundation of China (11101105, 11301226).

Abstract

Most known results on polynomial-like iterative equations are concentrated to increasing solutions. Without the uniformity of orientation and monotonicity, it becomes much more difficult for decreasing cases. In this paper, we prove the existence of decreasing solutions for a general iterative equation, which was proposed as an open problem in[J. Zhang, L. Yang, W. Zhang, Some advances on functional equations, Adv. Math. (China) 24 (1995) 385-405] (or[W. Zhang, J.A. Baker, Continuous solutions of a polynomial-like iterative equation with variable coefficients, Ann. Polon. Math. 73 (2000) 29-36]).

Cite this article

Wei SONG , Lin LI . CONTINUOUSLY DECREASING SOLUTIONS FOR A GENERAL ITERATIVE EQUATION[J]. Acta mathematica scientia, Series B, 2018 , 38(1) : 177 -186 . DOI: 10.1016/S0252-9602(17)30125-X

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