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Mathematics | Applied Proof Theory: Proof Interpretations and their Use in Mathematics

Applied Proof Theory: Proof Interpretations and their Use in Mathematics

Kohlenbach, Ulrich

2008, XX, 536 p.

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  • First book on the subject
  • Tells the whole story
  • Extended case studies

Ulrich Kohlenbach presents an applied form of proof theory that has led in recent years to new results in number theory, approximation theory, nonlinear analysis, geodesic geometry and ergodic theory (among others). This applied approach is based on logical transformations (so-called proof interpretations) and concerns the extraction of effective data (such as bounds) from prima facie ineffective proofs as well as new qualitative results such as independence of solutions from certain parameters, generalizations of proofs by elimination of premises.

The book first develops the necessary logical machinery emphasizing novel forms of Gödel's famous functional ('Dialectica') interpretation. It then establishes general logical metatheorems that connect these techniques with concrete mathematics. Finally, two extended case studies (one in approximation theory and one in fixed point theory) show in detail how this machinery can be applied to concrete proofs in different areas of mathematics.

 

Content Level » Research

Keywords » Arithmetic - Computational Mathematics - Finite - Mathematical logic - Proof Interpretations - Proof Mining - calculus - function - geometry - mathematics - proof - proof theory - theorem

Related subjects » Analysis - Mathematics

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