Strongly continuous integrated C-cosine operator functions
Tom 126 / 1997
Studia Mathematica 126 (1997), 273-289
DOI: 10.4064/sm-126-3-273-289
Streszczenie
We extend some recent results for regularized semigroups to strongly continuous n-times integrated C-cosine operator functions. Several equivalent conditions for the existence and uniqueness of solutions of (ACP$_2$) are also presented.