@article{Fukaya:2020Pr, author = "Fukaya, Hidenori and Furuta, Mikio and Matsuo, Shinichiroh and Onogi, Tetsuya and Yamaguchi, Satoshi and Yamashita, Mayuko", title = "{A physicist-friendly reformulation of the Atiyah-Patodi-Singer index and its mathematical justification}", doi = "10.22323/1.363.0061", journal = "PoS", year = 2020, volume = "LATTICE2019", pages = "061" }