TY - JOUR T1 - Positive Periodic Solutions for First-Order Nonlinear Neutral Differential Equations AU - Candan , T. JO - Journal of Nonlinear Modeling and Analysis VL - 3 SP - 938 EP - 945 PY - 2025 DA - 2025/05 SN - 7 DO - http://doi.org/10.12150/jnma.2025.938 UR - https://global-sci.org/intro/article_detail/jnma/24110.html KW - Fixed point, neutral equations, positive periodic solution, first-order AB -

We consider a first-order nonlinear neutral differential equation. By employing Krasnoselskii’s fixed point theorem, we provide several new criteria for the existence of positive periodic solutions to this equation. The theorems we have formulated are exemplified through a specific example.