Mathematics – Number Theory
Scientific paper
2006-12-07
Mathematics
Number Theory
38 pages. Adapted from a chapter of the author's PhD thesis
Scientific paper
We study the problem of defining line bundles over certain non-Hausdorff spaces known as Quantum Tori, motivated by the proposed theory of Real Multiplication for real quadratic fields. We draw analogies from the theory of Line Bundles over Complex Tori to define a non-trivial cohomological notion of Line Bundles over Quantum Tori. We prove a structure theorem for isomorphism classes of such line bundles analogous to the Appel-Humbert Theorem for Complex Tori. In the second half of this text we consider Lines Bundles over Quantum Tori as topological spaces, and compare this notion with the cohomological definition. We define the Chern class of a line bundle and link this to an alternating pairing on a certain subgroup of Quantum Tori. Finally we investigate how our results are related to the study of Quantum Tori by Zilber using Model theoretic techniques.
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