Topic summary
Formal systems
Extracted from the Wikipedia article Formal system.
External links
- Media related to Formal systems at Wikimedia Commons
- Encyclopædia Britannica, Formal system definition, 2007
- Daniel Richardson, Formal systems, logic and semantics
- Formal System at PlanetMath.
- Encyclopedia of Mathematics, Formal system
- Peter Suber, Formal Systems and Machines: An Isomorphism