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Linearized stability in periodic functional differential equations with state-dependent delays. (English) Zbl 1077.34074
The author investigates the equation $$\dot x (t)=f(t,x(t), x(t-\tau (t,x_t))),$$ where $f$ is smooth enough, and $f, \tau$ are $T$-periodic with respect to $t$. He gives a sufficient condition for the exponential stability of a $T$-periodic solution of the equation by the method of linearization.

##### MSC:
 34K20 Stability theory of functional-differential equations 34K13 Periodic solutions of functional differential equations
##### Keywords:
periodic solution; exponential stability
Full Text:
##### References:
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