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Breaking Math Podcast
How to Write a Permutation
The first thing you've written is called a permutation, the second one. And what's interesting is that permutations all have cycles within them. In terms of with any permutation, there's no way to do a permutation that doesn't have a cycle in it. So we could just go write a circle like that B transforms into C C transforms into D D transforms into B and E transforms into itself.
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