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12.49 (1992)

Solved

Construct all non-split extensions of elementary abelian 2-groups $V$ by $H = \text{PSL}_2(q)$ for which $H$ acts irreducibly on $V$.

Contributor: V. D. Mazurov

Progress

They are constructed (V. P. Burichenko, Algebra and Logic, 39 (2000), 160–183).

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