The multiplicad is a simple example of an idea like the ruliad. It consists of a rulial multiway system based on the positive integers in which the rules simply multiply by successive integers via (Wolfram 2021). While this multiplicad is presumably not capable of producing a full ruliad on its own, changing the underlying rules (likely by just inserting the operation of addition) might produce a system that is capable of universal computation and which could therefore generate the full ruliad (Wolfram 2021).

# Multiplicad

## See also

Multiplication, Multiway System, Ruliad, Universality## Explore with Wolfram|Alpha

## References

Wolfram, S. "The Concept of the Ruliad. Appendix: The Case of the 'Multiplicad.' " Nov. 10, 2021. https://writings.stephenwolfram.com/2021/11/the-concept-of-the-ruliad/.## Cite this as:

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