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DavidLHarden

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earned this badge 7 times.

Larger cycle than 4, 2, 1 in Collatz iteration?

Awarded Nov 1, 2021 at 10:02

Orders of automorphism groups of p-groups

Awarded Nov 1, 2019 at 16:50

Maximal Sylow 2-subgroups of simple groups

Awarded Oct 9, 2018 at 1:10

All maximal subgroups have odd index

Awarded Oct 1, 2016 at 3:16

Efficient presentations for finite groups

Awarded Mar 5, 2014 at 15:19

(A very limited instance of) Lagrange's Theorem's converse and A_5

Awarded Oct 6, 2012 at 3:50

Is there a Mathieu groupoid M_31?

Awarded Apr 18, 2011 at 20:05

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