Dynamical systems method (DSM) for unbounded operators

Details Dynamical systems method (DSM) for unbounded operators Dynamical systems method (DSM) for unbounded operators

2004-04-23

arxiv.org/abs/math/0404436v1

Mathematics

Functional Analysis

Scientific paper

Let $L$ be an unbounded linear operator in a real Hilbert space $H$, a generator of $C_0$ semigroup, and $g:H\to H$ be a $C^2_{loc}$ nonlinear map. The DSM (dynamical systems method) for solving equ$ $F(v):=Lv+gv=0$ consists of solving the Cauchy problem $\dot {u}=\Phi(t,u)$, $u(0)=u_0$, where $\Phi$ is a suitable operator, and proving that i) $\exists u(t) \quad \forall t>0$, ii) $\exists u(\infty)$, and iii) $F(u(\infty))=0$.

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