Proof theory, also called metamathematics, is the study of mathematics and mathematical reasoning (Hofstadter 1989) in a general and abstract sense itself. Instead of studying the objects of a particular mathematical theory, it examines the mathematical theories as such, especially with respect to their logical structure. It concentrates mainly on the way in which theorems are derived from axioms.
Proof Theory
See also
Logic, Mathematics, Metatheorem, ProofPortions of this entry contributed by Margherita Barile
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References
Birkhoff, G. and Mac Lane, S. A Survey of Modern Algebra, 5th ed. New York: Macmillan, p. 326, 1996.Chaitin, G. J. The Unknowable. New York: Springer-Verlag, 1999.Hofstadter, D. R. Gödel, Escher, Bach: An Eternal Golden Braid. New York: Vintage Books, p. 23, 1989.Referenced on Wolfram|Alpha
Proof TheoryCite this as:
Barile, Margherita and Weisstein, Eric W. "Proof Theory." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/ProofTheory.html