Misc,

Real multiplication and modular curves

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(2009)cite arxiv:0910.3875 Comment: 9 pages; written from scratch.

Abstract

We construct an inverse of functor F, which maps isomorphism classes of elliptic curves with complex multiplication to the stable isomorphism classes of the so-called noncommutative tori with real multiplication. The construction allows to prove, that complex and real multiplication are mirror symmetric, i.e. F maps each imaginary quadratic field of discriminant -D to the real quadratic field of discriminant D.

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