Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

On a local‐global principle for the divisibility of a rational point by a positive integer

On a local‐global principle for the divisibility of a rational point by a positive integer Following two previous papers (R. Dvornicich and U. Zannier, Bull. Soc. Math. France 129 (2001), 317–338; C. R. Acad. Sci. Paris, Ser. I 338 (2004) 47–50), we continue the investigation of a local‐global principle for the divisibility by a positive integer of a rational point on a commutative algebraic group. In the first half of this paper some new affirmative results are obtained for elliptic curves. In the second half we investigate the structure of possible situations when the principle does not hold; it is shown that whenever a certain abstract cohomology group does not vanish (which ‘often’ happens) there exist negative examples over suitable number fields. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Bulletin of the London Mathematical Society Wiley

On a local‐global principle for the divisibility of a rational point by a positive integer

Loading next page...
 
/lp/wiley/on-a-local-global-principle-for-the-divisibility-of-a-rational-point-tI8WH0YpT6

References (25)

Publisher
Wiley
Copyright
© London Mathematical Society
ISSN
0024-6093
eISSN
1469-2120
DOI
10.1112/blms/bdl002
Publisher site
See Article on Publisher Site

Abstract

Following two previous papers (R. Dvornicich and U. Zannier, Bull. Soc. Math. France 129 (2001), 317–338; C. R. Acad. Sci. Paris, Ser. I 338 (2004) 47–50), we continue the investigation of a local‐global principle for the divisibility by a positive integer of a rational point on a commutative algebraic group. In the first half of this paper some new affirmative results are obtained for elliptic curves. In the second half we investigate the structure of possible situations when the principle does not hold; it is shown that whenever a certain abstract cohomology group does not vanish (which ‘often’ happens) there exist negative examples over suitable number fields.

Journal

Bulletin of the London Mathematical SocietyWiley

Published: Feb 1, 2007

There are no references for this article.