机译：Batalin–Vilkovisky Structure on Hochschild Cohomology of Zigzag Algebra of Type A~1documentclass12pt{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} begin{document}$$widetilde{mathbf {A}}_{1}$$end{document}
