
We prove that the jacobian of a hyperelliptic curve y^2=f(x) has no nontrivial endomorphisms over an algebraic closure of the ground field of characteristic zero if the Galois group of the polynomial f is ``very big''.
LaTeX2e, 8 pages
endomorphism ring, 14H40, Mathematics - Number Theory, 11G30, 11G10, representations, hyperelliptic Jacobians, Abelian varieties of dimension \(> 1\), Mathematics - Algebraic Geometry, complex multiplication, FOS: Mathematics, Complex multiplication and abelian varieties, Number Theory (math.NT), Jacobians, Prym varieties, 14H40;14K05;11G30;11G10, 14K05, Algebraic Geometry (math.AG)
endomorphism ring, 14H40, Mathematics - Number Theory, 11G30, 11G10, representations, hyperelliptic Jacobians, Abelian varieties of dimension \(> 1\), Mathematics - Algebraic Geometry, complex multiplication, FOS: Mathematics, Complex multiplication and abelian varieties, Number Theory (math.NT), Jacobians, Prym varieties, 14H40;14K05;11G30;11G10, 14K05, Algebraic Geometry (math.AG)
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