Decision Procedure for an Extension of WS1S

  • Authors:
  • Felix Klaedtke

  • Affiliations:
  • -

  • Venue:
  • CSL '01 Proceedings of the 15th International Workshop on Computer Science Logic
  • Year:
  • 2001

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Abstract

We define an extension of the weak monadic second-order logic of one successor (WS1S) with an infinite family of relations and show its decidability. Analogously to the decision procedure for WS1S, automata are used. But instead of using word automata, we use tree automata that accept or reject words. In particular, we encode a word in a complete leaf labeled tree and restrict the acceptance condition for tree automata to trees that encode words. As applications, we show how this extension can be applied to reason automatically about parameterized families of combinational tree-structured circuits and used to solve certain decision problems.