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On the K-theory of elliptic curves

  • Kevin P Knudson EMAIL logo
Veröffentlicht/Copyright: 12. Juni 2008
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Journal für die reine und angewandte Mathematik
Aus der Zeitschrift Band 1999 Heft 507

Abstract

Let A be the coordinate ring of an affine elliptic curve (over an infinite field k) of the form X – {p}, where X is projective and p is a closed point on X. Denote by F the function field of X. We show that the image of H.(GL2 (A), ℤ) in H.(GL2 (F), ℤ) coincides with the image of H.(GL2 (k), ℤ). As a consequence, we obtain numerous results about the K-theory of A and X. For example, if k is a number field, we show that r2 (K2 (A) ⊗ ℚ) = 0, where rm denotes the mth level of the rank filtration.

Received: 1998-07-27
Published Online: 2008-06-12
Published in Print: 1999-02-15

© Walter de Gruyter

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