Where is a conditional connective and is a disjunction connective, the axiom scheme
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 (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 and , either holds or holds. Hence the axiom is also known as prelinearity or Dummett’s axiom.