Linear evolution equations of ``hyperbolic'' type, II
Linear evolution equations of ``hyperbolic'' type, II
\S 0. Introduction.In a previous paper [1] with the same title, we studied linear evolution equations of the form (E)$du/dt+A(t)u=f(t)$ , $0\leqq t\leqq T$ , $ u(O)=\phi$ , in a Banach space $X$ .The main Purpose of the present paper is to prove some approximation theorems related to (E).Before doing …