TOPICS
Search

Associative Array


A sequence {x_n} is called an infinitive sequence if, for every i, x_n=i for infinitely many n. Write a(i,j) for the jth index n for which x_n=i. Then as i and j range through N, the array A=a(i,j), called the associative array of x, ranges through all of N.


See also

Fractal Sequence, Infinitive Sequence

Explore with Wolfram|Alpha

WolframAlpha

More things to try:

References

Kimberling, C. "Fractal Sequences and Interspersions." Ars Combin. 45, 157-168, 1997.

Referenced on Wolfram|Alpha

Associative Array

Cite this as:

Weisstein, Eric W. "Associative Array." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/AssociativeArray.html

Subject classifications