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Nov 30, 2022 at 15:00 history edited Martin Sleziak
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Mar 25, 2019 at 12:50 vote accept Christian Gaetz
Mar 25, 2019 at 4:03 answer added Sebastien Palcoux timeline score: 7
Apr 28, 2016 at 3:43 comment added Gerry Myerson See also mathoverflow.net/questions/58794/… and math.stackexchange.com/questions/46981/…
Apr 28, 2016 at 3:08 comment added verret The groups are known up to $k=14$ at least, see Vera-López, A., Sangroniz, Josu, The finite groups with thirteen and fourteen conjugacy classes. Math. Nachr. 280 (2007), no. 5-6, 676–694.
Apr 28, 2016 at 0:02 comment added Geoff Robinson E.Landau proved in around 1895 that for a fixed $k$, there are only finitely many solutions to $\sum_{j=1}^{k} \frac{1}{n_{j}} = 1$ in positive integers. Apply this to the class equation of a finite group.
Apr 27, 2016 at 23:23 comment added Christian Gaetz I know it is due to Landau, but I don't have an exact reference.
Apr 27, 2016 at 23:21 comment added LSpice I didn't know the first statement of your question. Do you know a reference?
Apr 27, 2016 at 23:04 comment added YCor In a first step you can ask about estimates on the order of such a group (possibly with $\le k$ conjugacy classes rather than exactly $k$), and ask about groups with $\le k$ conjugacy classes of cardinal "asymptotically" maximal.
Apr 27, 2016 at 22:59 review First posts
Apr 28, 2016 at 1:46
Apr 27, 2016 at 22:58 history asked Christian Gaetz CC BY-SA 3.0