On the 4-rank of class groups of quadratic number fields
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- Fouvry, É. & Klüners, J. Invent. math. (2007) 167: 455. doi:10.1007/s00222-006-0021-2
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We prove that the 4-rank of class groups of quadratic number fields behaves as predicted in an extension due to Gerth of the Cohen–Lenstra heuristics.
© Springer-Verlag 2006