The Minkowski's question-mark function is a monotonic bijective function from rational numbers to numbers with finite binary representations. For which natural numbers $n$ is there a monotonic one-to-one correspondence between the set of rational numbers and the set of finite base-$n$ numbers?
2026-04-04 11:27:16.1775302036
Monotonic functions bijectively mapping rational numbers to $n$-adic rationals (numbers having finite expansions in base $n$)
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