Nominal Unification Revisited

  title={Nominal Unification Revisited},
  author={Christian Urban},
Nominal unification calculates substitutions that make terms involving binders equal modulo alphaequivalence. Although nominal unification can be seen as equivalent to Miller’s higher-order pattern unification, it has properties, such as the use of first-order terms with names (as opposed to alphaequivalence classes) and that no new names need to be generated during unification, which set it clearly apart from higher-order pattern unification. The purpose of this paper is to simplify a clunky… CONTINUE READING

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