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Article

Algebraically hyperbolic manifolds have finite automorphism groups

Communications in Contemporary Mathematics. 2020. Vol. 22. No. 2. P. 1950003.

A projective manifold M is algebraically hyperbolic if there exists a positive constant A such that the degree of any curve of genus g on M is bounded from above by A(g−1). A classical result is that Kobayashi hyperbolicity implies algebraic hyperbolicity. It is known that Kobayashi hyperbolic manifolds have finite automorphism groups. Here, we prove that, more generally, algebraically hyperbolic projective manifolds have finite automorphism groups.