Some New Existence Results for Positive Periodic Solutions to First-Order Neutral Differential Equations with Variable Coefficients
Abstract
:1. Introduction
- (1)
- (2)
2. Preliminaries
- (1)
- If is a constant c with then A has a continuous inverse on satisfying
- (2)
3. Main Results
4. Example
5. Conclusions and Discussions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Zhang, L.; Du, B. Some New Existence Results for Positive Periodic Solutions to First-Order Neutral Differential Equations with Variable Coefficients. Mathematics 2022, 10, 3770. https://doi.org/10.3390/math10203770
Zhang L, Du B. Some New Existence Results for Positive Periodic Solutions to First-Order Neutral Differential Equations with Variable Coefficients. Mathematics. 2022; 10(20):3770. https://doi.org/10.3390/math10203770
Chicago/Turabian StyleZhang, Lingping, and Bo Du. 2022. "Some New Existence Results for Positive Periodic Solutions to First-Order Neutral Differential Equations with Variable Coefficients" Mathematics 10, no. 20: 3770. https://doi.org/10.3390/math10203770
APA StyleZhang, L., & Du, B. (2022). Some New Existence Results for Positive Periodic Solutions to First-Order Neutral Differential Equations with Variable Coefficients. Mathematics, 10(20), 3770. https://doi.org/10.3390/math10203770