Ichinose, Takashi; Tamura, Hideo On the norm convergence of the Trotter-Kato product formula with error bound. (English) Zbl 0991.47504 RIMS Kokyuroku 1208, 128-134 (2001). MSC: 47D06 One-parameter semigroups and linear evolution equations PDFBibTeX XMLCite \textit{T. Ichinose} and \textit{H. Tamura}, RIMS Kokyuroku 1208, 128--134 (2001; Zbl 0991.47504)