Unramified Quaternion Extensions of Quadratic Number Fields, by Franz Lemmermeyer

This paper has appeared in J. Theor. Nombres Bordeaux 9 (1997), no.1, 51-68, and so the dvi version has been removed. In this article we show how to construct unramified quaternion extensions of quadratic number fields by completely elementary methods.

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Franz Lemmermeyer <hb3@ix.urz.uni-heidelberg.de>