Effective characterizations of tree logics

  • Authors:
  • Mikolaj Bojanńzyk

  • Affiliations:
  • Warsaw University, Warsaw, Poland

  • Venue:
  • Proceedings of the twenty-seventh ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
  • Year:
  • 2008

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Abstract

A survey of effective characterizations of tree logics. If L is a logic, then an effective characterization for L is an algorithm, which inputs a tree automaton and replies if the recognized language can be defined by a formula in L. The logics L considered include path testable languages, frontier testable languages, fragments of Core XPath, and fragments of monadic second-order logic.