Positive Solutions for Third-Order Boundary Value Problems with Indefinite Weight

被引:1
作者
Bi, Zhonghua [1 ]
Liu, Sanyang [1 ]
机构
[1] Xidian Univ, Sch Math & Stat, Xian 710126, Peoples R China
关键词
Disconjugacy; eigenvalues; indefinite weight; third-order boundary-value problem; bifurcation; EXISTENCE;
D O I
10.1007/s00009-023-02507-x
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
In this paper, we initially employ the disconjugacy theory to establish some sufficient conditions for the disconjugacy of y''' + beta y '' + alpha y' = 0. We then utilize Elias's spectrum theory to demonstrate the spectrum structure of the linear operator y''' + beta y '' + alpha y' coupled with the boundary conditions y(0) = y(1) = y' (1) = 0. Ultimately, by utilizing the acquired results, we ascertain the existence of positive solutions for the corresponding nonlinear third-order problem with an indefinite weight, based on the principles of bifurcation theory and the Leray-Schauder fixed point theorem.
引用
收藏
页数:18
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