The Wolfram 2,3 Turing Machine Left-Compressed Evolution

Initializing live version
Download to Desktop

Requires a Wolfram Notebook System

Interact on desktop, mobile and cloud with the free Wolfram Player or other Wolfram Language products.

A left-compressed display of a Turing machine shows only the steps where the head has moved farther to the left than all previous steps. Shown here is the right-hand side of the left-compressed Wolfram 2,3 Turing machine, which exhibits complex behavior.


The rows of the compressed evolution increase on the right by either one or three cells. The plot on the bottom shows the number of lengths of runs of rows that increase by one cell.


Contributed by: Jesse Nochella (March 2011)
Based on work by: Stephen Wolfram
Open content licensed under CC BY-NC-SA



Feedback (field required)
Email (field required) Name
Occupation Organization
Note: Your message & contact information may be shared with the author of any specific Demonstration for which you give feedback.