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Published online by Cambridge University Press: 20 November 2018
In the present note we shall study some properties of the Mathieu groups.
We shall give an invariant characterisation of the 2-Sylow subgroups. The 2-Sylow subgroup of M24 is the holomorph of the elementary abelian group of type (1, 1, 1, 1), and for the 2-Sylow subgroups of the other Mathieu groups there are similar characterisations.
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