Please use this identifier to cite or link to this item: http://hdl.handle.net/10077/4275

 Title: Life-Span of solutions to nonlinear dissipative evolution equations: a singular perturbation approach Authors: Milani, Albert Issue Date: 2000 Publisher: Università degli Studi di Trieste. Dipartimento di Scienze Matematiche Citation: Albert Milani, "Life-Span of solutions to nonlinear dissipative evolution equations: a singular perturbation approach", in: Rendiconti dell’Istituto di Matematica dell’Università di Trieste. An International Journal of Mathematics, 31 (2000) suppl.2, pp. 189-208. Series/Report no.: Rendiconti dell’Istituto di Matematica dell’Università di Trieste. An International Journal of Mathematics31 (2000) suppl.2 Abstract: We investigate the large time behavior of solutions to nonlinear dissipative wave equations of the general form $\varepsilon u_{tt}+u_{t}-\Delta u=F\left(x,t,u,D_{x}u,D_{x}^{2}u\right);$ in particular, we study the dependence of the solutions $u=u^{\varepsilon}$ and of their life span $T_{\varepsilon}$ on the (small'' parameter $\varepsilon$. We are interested in the behavior of $u^{\varepsilon}$ and $T_{\varepsilon}$ as $\varepsilon\rightarrow0$, and in their relations with the solution v, and its life span T$_{p}$ , of the corresponding limit equation when $\varepsilon=0$, which is of parabolic type. We look for conditions under which either $T_{\varepsilon}=+\infty,\: or\: T_{\varepsilon}\rightarrow T_{p}\leq+\infty$ as $\varepsilon=0$. URI: http://hdl.handle.net/10077/4275 ISSN: 0049-4704 Appears in Collections: Rendiconti dell‘ Istituto di matematica dell‘ Università di Trieste: an International Journal of Mathematics vol.31 (2000) s2

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