On numerically trivial automorphisms of compact hyperk\"ahler manifolds of dimension 4

Author:

Chen Jiang, Wenfei Liu

Keyword:

Mathematics, Algebraic Geometry, Algebraic Geometry (math.AG)

journal:

date:

2023-08-06 16:00:00

Abstract

We prove that the automorphism group of a compact hyperk\"ahler manifold of dimension 4 acts faithfully on the cohomology ring.