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by wetmore 517 days ago
Google even and odd permutations to learn more :)
2 comments
JadeNB 517 days ago
What a lovely independent discovery! The context is similar to the (un)solvability of the 15 puzzle.

https://en.wikipedia.org/wiki/15_puzzle#Solvability

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oliwary 517 days ago
Ahhh fascinating! :) Thank you for the pointer.
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