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Questions related to permutations, bijections from a finite (or sometimes infinite) set to itself.

8 votes
2 answers
1k views

Distribution of distances in permutations

Let's consider all possible permutations of N numbers. Suppose for each permutation we calculate the sum of absolute differences between consecutive elements. … =6 permutations and possible sums as 2 and 3. The number of sums of 2 is 2 and for 3 it's equal 4. …
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