Home > Science > Math > Logic and Foundations > Nonstandard Logics and Extensions
http://en.wikipedia.org/wiki/Computability_logic
Wikipedia (free encyclopedia) article.
http://plato.stanford.edu/entries/logic-infinitary/
Article in the Stanford Encyclopaedia of Philosophy by John L. Bell. Infinitary Logic is a branch of formal logic where finitary formulae are replaced by potentially infinitary mathematical entities.
http://www.cc.utah.edu/~nahaj/logic/structures/
Shows how a number of representative logics fit together. The interrelationships usually given as something of the form: System X is system Y plus the axiom Z. By John Halleck.
http://www.earlham.edu/~peters/courses/logsys/nonstbib.htm
A comprehensive listing of flavours of non-standard logic with brief descriptions and references, compiled by Peter Suber.
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