J. Nonl. Mod. Anal., 2 (2020), pp. 513-524.
Published online: 2021-04
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By using the first eigenvalue corresponding to the relevant linear operator and the topological degree theorem, sufficient conditions for the existence of positive solutions for a nonlinear second order periodic boundary value problem are given. Our results improve and generalize some preliminary works.
}, issn = {2562-2862}, doi = {https://doi.org/10.12150/jnma.2020.513}, url = {http://global-sci.org/intro/article_detail/jnma/18825.html} }By using the first eigenvalue corresponding to the relevant linear operator and the topological degree theorem, sufficient conditions for the existence of positive solutions for a nonlinear second order periodic boundary value problem are given. Our results improve and generalize some preliminary works.