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单词 conditional choice
释义
conditional choice

Logic
  • Where is a conditional connective and is a disjunction connective, the axiom scheme

    • (φψ)(ψφ).

    Conditional choice frequently features in the study of intuitionistic logic and its extensions. The addition of the axiom to intuitionistic logic yields the Gödel-Dummett logic LC (named for logicians Kurt Gödel (1906–1978) and Michael Dummett (1925–2011)); semantically, the axiom corresponds to Kripke models for intuitionistic logic in which the accessibility relation is linear, i.e., for all possible worlds w and w, either wRw holds or wRw holds. Hence the axiom is also known as prelinearity or Dummett’s axiom.


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