Existence of positive solutions for a class of first order semi-positone periodic boundary value problems

• Published in: Zhejiang da xue xue bao. Journal of Zhejiang University. Sciences edition. Li xue ban Vol. 50; no. 3; pp. 298 - 302
• Main Author: Yang, Wei
• Format: Journal Article
• Language: Chinese
• Published: Hangzhou Zhejiang University 01.05.2023; Zhejiang University Press
• Subjects: Boundary value problems; Continuity (mathematics)

This paper studies the existence of positive solutions for a class of first order semi-positone periodic boundary value problems ■ where k is a constant, k ＞ 0,λ is a parameter, λ ＞ 0,a: [ 0,1 ] → R is a continuous function, either f is nonnegative and continuous on [ 0,∞) with f（ 0）= 0 or f is posi...