*主持人：周国栋 教授

*讲座内容简介：
In this mini-course, the deformation theory of Ginzburg Calab-Yau algebras is related to negative cyclic homology. We do this by exhibiting a DG-Lie algebra that controls this deformation theory and whose homology is negative cyclic homology. We show that the bracket induced on negative cyclic homology coincides with Menichi's string topology bracket. We show in addition that the obstructions against deforming Calabi–Yau algebras are annihilated by the map to periodic cyclic homology.

*主讲人简介：
　　吴燚林，2021年博士毕业于巴黎西奈大学，导师国际数学大学报告人Keller教授，2022年取得华东师范大学博士学位，同年获得华东师范大学优秀博士论文，现在中国科学技术大学做博士后。主要研究相对Calabi-Yau结构与丛范畴。