A Proof of the Existenceof Level 1
نویسنده
چکیده
In Land2] Landweber provides two proofs of the existence of (level 2) elliptic cohomology. As Baker points out in Bak1], one of these proofs gives a level 1 elliptic cohomology theory as well. In this note we provide an alternative proof of the existence of level 1 elliptic co-homology. The idea here is to use Landweber's direct proof of the existence of level 2 elliptic cohomology, and use an integrality argument to deduce the existence of level 1 elliptic cohomology from that.
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