Rational Points And Arithmetic Of Fundamental Groups: Evidence For The Section Conjecture at Meripustak

Rational Points And Arithmetic Of Fundamental Groups: Evidence For The Section Conjecture

Books from same Author: STIX J

Books from same Publisher: SPRINGER

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  • General Information  
    Author(s)STIX J
    PublisherSPRINGER
    ISBN9783642306730
    Pages249
    BindingSoftbound
    LanguageEnglish
    Publish YearOctober 2012

    Description

    SPRINGER Rational Points And Arithmetic Of Fundamental Groups: Evidence For The Section Conjecture by STIX J

    The section conjecture in anabelian geometry, announced by Grothendieck in 1983, is concerned with a description of the set of rational points of a hyperbolic algebraic curve over a number field in terms of the arithmetic of its fundamental group. While the conjecture is still open today in 2012, its study has revealed interesting arithmetic for curves and opened connections, for example, to the question whether the Brauer-Manin obstruction is the only one against rational points on curves. This monograph begins by laying the foundations for the space of sections of the fundamental group extension of an algebraic variety. Then, arithmetic assumptions on the base field are imposed and the local-to-global approach is studied in detail. The monograph concludes by discussing analogues of the section conjecture created by varying the base field or the type of variety, or by using a characteristic quotient or its birational analogue in lieu of the fundamental group extension.