具体的には、次の論文の関連部分について主に解説する。
Larsen, M., Lunts, V.A.: Motivic measures and stable birational geometry. Mosc. Math. J. 3, 85–95 (2003); arXiv:math/0110255
Bittner, F.: The universal Euler characteristic for varieties of characteristic zero. Compos. Math. 140, 1011–1032 (2004); arXiv:math/0111062
Kontsevich, M., Tschinkel, Y., Specialization of birational types. Invent. Math. 217, 415–432 (2019); arXiv:1708.05699
Lin H.-Y., Shinder, E., Motivic invariants of birational maps, arXiv:2207.07389