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Published November 1, 1996 | public
Journal Article Open

On a theorem of Koch

Hajir, Farshid

Abstract

We give a short proof of a slightly stronger version of a theorem of Koch: A complex quadratic field whose ideal class group contains a subgroup of type (4, 4, 4) possesses an infinite unramified Galois pro-2 extension.

Additional Information

© 1996 Pacific Journal of Mathematics. Received December 10, 1993 and revised December 7, 1994.

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