Definition:Modified Kaprekar Mapping/Historical Note
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Historical Note on Modified Kaprekar Mapping
The modified Kaprekar mapping is reported by David Wells in his $1997$ work Curious and Interesting Numbers, 2nd ed. to appear in volume $22$ Journal of Recreational Mathematics on page $34$ in an article authored by Charles Wilderman Trigg, but this has not been corroborated.
The term modified Kaprekar mapping was invented by $\mathsf{Pr} \infty \mathsf{fWiki}$ as a convenient way to refer to this mapping.
As such, it is not generally expected to be seen in this context outside $\mathsf{Pr} \infty \mathsf{fWiki}$.
Sources
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $2538$