A Tableau Proof System with Names for Modal Mu-calculus

  title={A Tableau Proof System with Names for Modal Mu-calculus},
  author={Colin Stirling},
Howard Barringer was a pioneer in the study of temporal logics with fixpoints [1]. Their addition adds considerable expressive power. One general issue is how to define proof systems for such logics. Here we examine proof systems for modal logic with fixpoints. We present a tableau proof system for checking validity of formulas which uses names to keep track of unfoldings of fixpoint variables as devised in [8]. 


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