Turing completeness: Difference between revisions
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→List of Turing-complete systems: linked SK Calculus |
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* [[Turing machine]] | * [[Turing machine]] | ||
* [[Lambda calculus]] | * [[Lambda calculus]] | ||
* SK calculus | * [[Busy Beaver for SKI calculus#SK calculus|SK calculus]] | ||
* [[General Recursive Function|General Recursive Functions]] | * [[General Recursive Function|General Recursive Functions]] | ||
* [[Minsky machine]] | * [[Minsky machine]] | ||
Latest revision as of 18:12, 2 March 2026
A Turing-complete system is a system that can compute every computable function. A Turing-complete system can be used to simulate any Turing machine or other Turing-complete systems.
The halting problem is uncomputable on any Turing-complete system.
To be Turing-complete, a system must be able to store unbounded memory and having access to the memory. There must be also infinitely many different non-halting programs (like "while" loops or recursion).
List of Turing-complete systems
This list is non-exhaustive.
- Turing machine
- Lambda calculus
- SK calculus
- General Recursive Functions
- Minsky machine
- Fractran
- Rule 110 automaton
- Conway's game of life
- 2-Tag system
- Cyclic Tag
- Tree Rewriting System
- Brainfuck
See Also
Wikipedia article about computability: https://en.wikipedia.org/wiki/Computability