Journal of Jilin University Science Edition ›› 2025, Vol. 63 ›› Issue (5): 1239-1246.
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WANG Yufang
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Abstract: The author considers the existence of positive solutions for the first-order semi-positone problem. Based on the fixed point theorem of Krasnoselskill, the author proves that there exists λ*>0, such that the problem has at least one solution when 0<λ<λ*.
Key words: periodic boundary value problem, semi-positone, discretion, positive solution, fixed point theorem of Krasnoselskill
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WANG Yufang. Existence of Positive Solutions for a Class of First-Order Semi-positone Preiodic Boundary Value Problems[J].Journal of Jilin University Science Edition, 2025, 63(5): 1239-1246.
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http://xuebao.jlu.edu.cn/lxb/EN/Y2025/V63/I5/1239
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