Na-Na Shao, You-Wei Zhang
Abstract: Submitted April 8, 2008. Published August 20, 2008.
Math Subject Classifications: 34B15, 39A10
Key Words: Positive solution; semipositone dynamic system;
cone; fixed point index; time scales.
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Na-Na Shao School of Mathematics and Statistics, Lanzhou University Lanzhou, 730000, Gansu, China email: shaonn06@lzu.cn |
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You-Wei Zhang Department of Mathematics, Hexi University Zhangye, 734000, Gansu, China email: zhangyw05@lzu.cn |
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