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Rational points in periodic analytic sets and the Manin-Mumford conjecture

Abstract:
We present a new proof of the Manin-Mumford conjecture about torsion points on algebraic subvarieties of abelian varieties. Our principle, which admits other applications, is to view torsion points as rational points on a complex torus and then compare (i) upper bounds for the number of rational points on a transcendental analytic variety (Bombieri-Pila-Wilkie) and (ii) lower bounds for the degree of a torsion point (Masser), after taking conjugates. In order to be able to deal with (i), we discuss (Thm. 2.1) the semi-algebraic curves contained in an analytic variety supposed invariant for translations by a full lattice, which is a topic with some independent motivation.
Publication status:
Published

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Publisher copy:
10.4171/RLM/514

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Mathematical Institute
Role:
Author


Journal:
RENDICONTI LINCEI-MATEMATICA E APPLICAZIONI More from this journal
Volume:
19
Issue:
2
Pages:
149-162
Publication date:
2008-02-27
DOI:
EISSN:
1720-0768
ISSN:
1120-6330


Language:
English
Keywords:
Pubs id:
pubs:187991
UUID:
uuid:0da6f1b9-1ea3-4362-b08d-cbd4cf6e0573
Local pid:
pubs:187991
Source identifiers:
187991
Deposit date:
2012-12-19

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