Class number problem
description: finding complete list of imaginary quadratic fields having a given class number
subject: Category:Mathematical problems
label: 類数問題 @ja
title: Gauss's Class Number Problem
label: Problème du nombre de classes pour les corps quadratiques imaginaires @fr
subject: Category:Algebraic number theory
label: Klassengetalprobleem @nl
subject: Category:Unsolved problems in number theory
urlname: GausssClassNumberProblem