期刊
ABSTRACT AND APPLIED ANALYSIS
卷 -, 期 -, 页码 -出版社
HINDAWI PUBLISHING CORPORATION
DOI: 10.1155/2012/712743
关键词
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资金
- European Social Fund [POSDRU/21/1.5/G/13798]
- project Cresterea calitatii si a competitivitatii cercetarii doctorale prin acordarea de burse [POSDRU/88/1.5/S/49516]
- European Social Fund through Sectorial Operational Programme for Human Resources Development
In this paper we prove a fixed-point theorem for a class of operators with suitable properties, in very general conditions. Also, we show that some recent fixed-points results in Brzdek et al., (2011) and Brzdek and Cieplinski (2011) can be obtained directly from our theorem. Moreover, an affirmative answer to the open problem of Brzdek and Cieplinski (2011) is given. Several corollaries, obtained directly from our main result, show that this is a useful tool for proving properties of generalized Hyers-Ulam stability for some functional equations in a single variable.
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