2019/02/26 by Kontsevich, Maxim, Pestun, Vasily, Tschinkel, Yuri
#Algebraic Geometry (math.AG) #FOS: Mathematics #Number Theory (math.NT)
paper · doi:10.48550/arxiv.1902.09894
We introduce new invariants in equivariant birational geometry and study their relation to modular symbols and cohomology of arithmetic groups.