*in which we use actions to find sizes of groups, subgroups and stabilisers, and prove Cauchy’s Theorem.
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*in which we use actions to find sizes of groups, subgroups and stabilisers, and prove Cauchy’s Theorem.
*

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*in which we prove Cauchy’s theorem and revisit the symmetric groups.
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*in which we meet conjugation in several forms, and learn that lecturers are not infallible.
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