Editorial: [Keep/Drop, Simplify, Expand, Re-write, Re-organize, Move]

[Fiach-Dubh]

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a misspelled word in Ch13

What editing does this need?
Some options: Keep/Drop, Simplify, Expand, Re-write, Re-organize, Move

"arity" should be "rarity"

How does it currently read?
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"In addition to these encoding constraints, a series of higher-level interpretation requirements is also defined based on the arity of a given type integer."

How should it read?
Write a recommended solution here, if you can!

"In addition to these encoding constraints, a series of higher-level interpretation requirements is also defined based on the rarity of a given type integer."