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On logical descriptions of some concepts in structural complexity theory

  • Erich Grädel
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 440)

Abstract

A logical framework is introduced which captures the behaviour of oracle machines and gives logical descriptions of complexity classes that are defined by oracle machines. Using this technique the notion of first-order selfreducibility is investigated and applied to obtain a structural result about non-uniform complexity classes below P.

Keywords

Complexity Theory Logical Description Order Logic Travel Salesperson Problem First Order 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • Erich Grädel
    • 1
  1. 1.Mathematisches InstitutUniversität BaselBasel

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