We discuss the asymptotic behaviour of all solutions of the functional differential equation \[y^{\prime }(x)=\sum _{i=1}^ma_i(x)y(\tau _i(x))+b(x)y(x)\,,\] where $b(x)<0$. The asymptotic bounds are given in terms of a solution of the functional nondifferential equation \[\sum _{i=1}^m|a_i(x)|\omega (\tau _i(x))+b(x)\omega (x)=0.\]
@article{107708, author = {Jan \v Cerm\'ak}, title = {Asymptotic estimation for functional differential equations with several delays}, journal = {Archivum Mathematicum}, volume = {035}, year = {1999}, pages = {337-345}, zbl = {1048.34126}, mrnumber = {1744521}, language = {en}, url = {http://dml.mathdoc.fr/item/107708} }
Čermák, Jan. Asymptotic estimation for functional differential equations with several delays. Archivum Mathematicum, Tome 035 (1999) pp. 337-345. http://gdmltest.u-ga.fr/item/107708/
On the asymptotic behaviour of solutions of certain functional differential equations, Math. Slovaca 48 (1998), 187–212. (1998) | MR 1647674
The asymptotic bounds of linear delay systems, J. Math. Anal. Appl. 225 (1998), 373–388. (1998) | MR 1644331
Asymptotic equilibrium for a class of delay differential equations, Proc. of the Second International Conference on Difference Equations, S. Elaydi, I. Győri, G. Ladas (eds.), 1995, pp. 137–143. (1995) | MR 1636319
Introduction to Functional Differential Equations, Springer-Verlag, New York, 1993. (1993) | MR 1243878
A change of variables for functional differential equations, J. Differential Equations 18 (1975), 1–10. (1975) | MR 0387766 | Zbl 0318.34069
The functional differential equation $y^{\prime }(x)=ay(\lambda x)+by(x)$, Bull. Amer. Math. Soc. 77 (1971), 891–397. (1971) | MR 0283338
Iterative Functional Equations, Encyclopedia of Mathematics and its Applications, Cambridge University Press, 1990. (1990) | MR 1067720
Simultaneous solutions of a system of Abel equations and differential equations with several deviations, Czechoslovak Math. J. 32 (107) (1982), 488–494. (1982) | MR 0669790 | Zbl 0524.34070
Transformations and canonical forms of functional-differential equations, Proc. Roy. Soc. Edinburgh 115A (1990), 349–357. (1990) | MR 1069527
On Simultaneous Abel equations, Aequationes Math. (1989), 163–177. (1989) | MR 1018910 | Zbl 0686.39009