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Real Quadratic Fields In Which Every Non-Maximal Order Has Relative Class Number Greater Than One

Number Theory 2013-06-03 v2

Abstract

Cohn asks if for every real quadratic field Q(m) with discriminant d there exists a non-maximal order corresponding to f > 1 such that the relative class number Hd(f) = h(f2d)/h(d) is one. We prove that when m = 46 (and in seven other cases) there is no such order.

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Cite

@article{arxiv.1211.5630,
  title  = {Real Quadratic Fields In Which Every Non-Maximal Order Has Relative Class Number Greater Than One},
  author = {Amanda Furness and Adam E. Parker},
  journal= {arXiv preprint arXiv:1211.5630},
  year   = {2013}
}

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8 pages