Abelian varieties in and points of bounded degree on algebraic curves
Olivier Debarre, Rachid Fahlaoui (1993)
Compositio Mathematica
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Olivier Debarre, Rachid Fahlaoui (1993)
Compositio Mathematica
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Fabio Bardelli, Ciro Ciliberto, Alessandro Verra (1995)
Compositio Mathematica
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Hans-Georg Rück (1990)
Compositio Mathematica
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José M. Muñoz Porras (1987)
Compositio Mathematica
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J. H. Silverman, J. F. Voloch (1991)
Compositio Mathematica
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Dan Abramovich, Joe Harris (1991)
Compositio Mathematica
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Josep González (1998)
Publicacions Matemàtiques
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Let A be an abelian variety defined over a finite field. In this paper, we discuss the relationship between the p-rank of A, r(A), and its endomorphism algebra, End(A). As is well known, End(A) determines r(A) when A is an elliptic curve. We show that, under some conditions, the value of r(A) and the structure of End(A) are related. For example, if the center of End(A) is an abelian extension of Q, then A is ordinary if and only if End(A) is a commutative field. Nevertheless, we give...