Prime torsion in the Brauer group of an elliptic curve
The Brauer group is an invariant in algebraic geometry and number theory, that can be associated to a field, variety, or scheme. Let k be a field of characteristic different from 2 or 3, and let E be an elliptic curve over k. The Brauer group of E is a torsion abelian group with elements given by Morita equivalence classes of central simple algebras over the function field k(E). The Merkurjev-Suslin theorem implies that any such element can be described by a tensor product of symbol algebras. We give a description of elements in the d-torsion of the Brauer group of E in terms of these tensor products, provided that the d-torsion of E is k-rational and k contains a primitive d-th root of unity. Furthermore, if d = q is a prime, we give an algorithm to compute the q-torsion of the Brauer group over any field k of characteristic different from 2,3, and q containing a primitive q-th root of unity.
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- In Collections
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Electronic Theses & Dissertations
- Copyright Status
- Attribution 4.0 International
- Material Type
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Theses
- Authors
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Ure, Charlotte
- Thesis Advisors
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Kulkarni, Rajesh S.
- Committee Members
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Levin, Aaron D.
Pappas, Georgios
Shapiro, Michael
Rapinchuk, Igor
- Date Published
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2019
- Subjects
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Torsion
Brauer groups
Curves, Elliptic
- Program of Study
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Mathematics - Doctor of Philosophy
- Degree Level
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Doctoral
- Language
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English
- Pages
- viii, 89 pages
- ISBN
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9781392227565
1392227569
- Permalink
- https://doi.org/doi:10.25335/v235-8748