Blow-up and superexponential growth in superlinear Volterra equations
Blow-up and superexponential growth in superlinear Volterra equations
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超线性 Volterra 方程中的爆炸和超指数增长
DOI:
10.3934/dcds.2018174
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Denis D. Patterson
中科院分区:
文献类型:
--
作者:
J. Appleby;Denis D. Patterson
This paper concerns the finite-time blow-up and asymptotic behaviour of solutions to nonlinear Volterra integro-differential equations. Our main contribution is to determine sharp estimates on the growth rates of both explosive and nonexplosive solutions for a class of equations with nonsingular kernels under weak hypotheses on the nonlinearity. In this superlinear setting we must be content with estimates of the form \begin{document}$\lim_{t\toτ}A(x(t), t) = 1$\end{document} , where \begin{document}$τ$\end{document} is the blow-up time if solutions are explosive or \begin{document}$τ = ∞$\end{document} if solutions are global. Our estimates improve on the sharpness of results in the literature and we also recover well-known blow-up criteria via new methods.