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Apr 13, 2017 at 12:58 history edited CommunityBot
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Sep 28, 2012 at 15:22 comment added Benjamin Dickman Thanks for the note, example, and link. It's interesting that of the five groups of order $27$, there is of course the cyclic group $C_{27}$, and then not only do $UT(3,3)$ and $C_{3}^{3}$ have the same order sequence, but so do the other two groups of this order: namely, the direct product of $C_9$ and $C_3$ as well as the semidirect product of $C_9$ and $C_3$. From these examples alone, a whole host of possible conjectures on order sequences can be dismissed outright...
Sep 28, 2012 at 6:18 comment added Geoff Robinson Yes, indeed there are many non-isomorphic examples of $p$-groups of exponent $p,$ each pair providing a counterexample to the assertion that order sequence determines the isomorphism type of the group
Sep 27, 2012 at 12:20 history answered Denis Serre CC BY-SA 3.0