$A_{\infty }$-deformations of zigzag algebras via Ginzburg dg algebras

Junyang Liu, Zhengfang Wang

This note aims to give a short proof of the recent result due to Etgü-Lekili (2017) and Lekili-Ueda (2021): the zigzag algebra of any finite tree over a field of characteristic 0 i…