Publication Cover
Applicable Analysis
An International Journal
Volume 42, 1991 - Issue 1-4
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Original Articles

Some new fixed point theorems of increasing operators and applications

Pages 263-273 | Received 23 Oct 1990, Published online: 10 May 2007
 

Abstract

Let E be a Banach space, P a cone in E, A:P→P an increasing operator. If there exist xO, yOεP such that xO⩽AxO, AyO⩽yO and xO⩽̸yO, then we say A satisfies two-point extension condition. We prove some fixed point theorems under two'point extension condition, and give some applications to nonlinear differential equations.

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