Tarski's World
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Tarski's World is a computer-based introduction to
first-order logic First-order logic—also known as predicate logic, quantificational logic, and first-order predicate calculus—is a collection of formal systems used in mathematics, philosophy, linguistics, and computer science. First-order logic uses quantifie ...
written by
Jon Barwise Kenneth Jon Barwise (; June 29, 1942 – March 5, 2000) was an American mathematician, philosopher and logician who proposed some fundamental revisions to the way that logic is understood and used. Education and career Born in Independence, ...
and
John Etchemendy John W. Etchemendy (born 1952 in Reno, Nevada) is an American logician and philosopher who served as Stanford University's twelfth Provost. He succeeded John L. Hennessy to the post on September 1, 2000 and stepped down on January 31, 2017. E ...
. It is named after the mathematical logician
Alfred Tarski Alfred Tarski (, born Alfred Teitelbaum;School of Mathematics and Statistics, University of St Andrews ''School of Mathematics and Statistics, University of St Andrews''. January 14, 1901 – October 26, 1983) was a Polish-American logician a ...
. The package includes a book, which serves as a textbook and manual, and a computer program which together serve as an introduction to the semantics of logic through games in which simple, three-dimensional worlds are populated with various geometric figures and these are used to test the truth or falsehood of first-order logic sentences. The program is also included in
Language, Proof and Logic Language, Proof and Logic is an educational software package, devised and written by Jon Barwise and John Etchemendy, geared to teaching formal logic through the use of a tight integration between a textbook (same name as the package) and four sof ...
package. The programme was later extended into Hyperproof.


The programme

* Barwise, J., & Etchemendy, J. (1993). ''Tarski's world''. Stanford, Calif: CSLI Publ. * Barker-Plummer, D., Barwise, J., & Etchemendy, J. (2008). ''Tarski's world''. Stanford, Calif: CSLI Publications.
The Openproof Project at CSLI:home page of the Tarski's World courseware package, Dave Barker-Plummer, Jon Barwise and John Etchemendy in collaboration with Albert Liu


References

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External links


A short video clip showing how to use the Tarski's World program for Language Proof and Logic.
Predicate logic Educational software