机译：Correction to: Strictly hyperbolic Cauchy problems on Rndocumentclass12pt{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} begin{document}$${varvec{{mathbb{R}}^n}}$$end{document} with unbounded and singular coefficients
