Permutations : Disjoint Transpositions
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If $ belongs to Sn (where Sn is the symmetric group of degree n), show that $^2 = % if and only if $ is a product of disjoint transpositions.
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Solution Summary
A proof involving symmetric groups and disjoint transpositions is provided. The proof is concise.
Solution Preview
Here % should mean the unit 1.
If $ is a product of disjoint transpositions, then $=a1*a2...*ak, where ai are ...
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