Positive periodic solutions for nonlinear first-order delayed differential equations at resonance
Abstract This paper studies the existence of positive periodic solutions of the following delayed differential equation: u′+a(t)u=f(t,u(t−τ(t))), $$ u'+a(t)u=f\bigl(t,u\bigl(t-\tau (t)\bigr)\bigr), $$ where a,τ∈C(R,R) $a, \tau \in C(\mathbb{R},\mathbb{R})$ are ω-periodic functions with ∫0ωa(t)d...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2018-12-01
|
| Series: | Boundary Value Problems |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s13661-018-1104-x |