Birch and Swinnerton-Dyer conjecture
Let be an elliptic curve over , and let be the L-series attached to .
Conjecture 1 (Birch and Swinnerton-Dyer).
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has a zero at of order equal to the rank of .
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Let . Then the residue of at , i.e. has a concrete expression involving the following invariants of : the real period, the Tate-Shafarevich group, the elliptic regulator and the Neron model of .
J. Tate said about this conjecture: “This remarkable conjecture relates the behavior of a function at a point where it is not at present known to be defined to the order of a group (Sha) which is not known to be finite!” The precise statement of the conjecture asserts that:
where
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is the rank of .
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is either the real period or twice the real period of a minimal model for , depending on whether is connected or not.
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is the order of the Tate-Shafarevich group of .
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is the http://planetmath.org/node/RegulatorOfAnEllipticCurveelliptic regulator of .
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is the number of torsion points on (including the point at infinity ).
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is an elementary local factor, equal to the cardinality of , where is the set of points in whose reduction modulo is non-singular in . Notice that if is a prime of good reduction for then , so only only for finitely many primes . The number is usually called the Tamagawa number of at .
The following is an easy consequence of the B-SD conjecture:
Conjecture 2 (Parity Conjecture).
The root number of , denoted by , indicates the parity of the rank of the elliptic curve, this is, if and only if the rank is even.
There has been a great amount of research towards the B-SD conjecture. For example, there are some particular cases which are already known:
Theorem 1 (Coates, Wiles).
Suppose is an elliptic curve defined over an imaginary quadratic field , with complex multiplication by , and is the L-series of . If then is finite.
References
- 1 Claymath Institute, Description, http://www.claymath.org/millennium/Birch_and_Swinnerton-Dyer_Conjecture/online.
- 2 J. Coates, A. Wiles, On the Conjecture of Birch and Swinnerton-Dyer, Inv. Math. 39, 223-251 (1977).
- 3 Keith Devlin, The Millennium Problems: The Seven Greatest Unsolved Mathematical Puzzles of Our Time, 189 - 212, Perseus Books Group, New York (2002).
- 4 James Milne, Elliptic Curves, http://www.jmilne.org/math/CourseNotes/math679.htmlonline course notes.
- 5 Joseph H. Silverman, The Arithmetic of Elliptic Curves. Springer-Verlag, New York, 1986.
- 6 Joseph H. Silverman, Advanced Topics in the Arithmetic of Elliptic Curves. Springer-Verlag, New York, 1994.
Title | Birch and Swinnerton-Dyer conjecture |
Canonical name | BirchAndSwinnertonDyerConjecture |
Date of creation | 2013-03-22 13:49:46 |
Last modified on | 2013-03-22 13:49:46 |
Owner | alozano (2414) |
Last modified by | alozano (2414) |
Numerical id | 16 |
Author | alozano (2414) |
Entry type | Conjecture |
Classification | msc 14H52 |
Synonym | BS-D conjecture |
Related topic | EllipticCurve |
Related topic | RegulatorOfAnEllipticCurve |
Related topic | MordellCurve |
Related topic | ArithmeticOfEllipticCurves |
Defines | Birch and Swinnerton-Dyer conjecture |
Defines | parity conjecture |