(**********************************************************************)
(** ** AC_fun + IGP = GAC_fun = OAC_fun = AC_fun + Drinker *)
(** AC_fun + IGP = GAC_fun *)

Corollary fun_choice_and_indep_general_prem_iff_guarded_fun_choice :
FunctionalChoiceOnInhabitedSet /\ IndependenceOfGeneralPremises
<-> GuardedFunctionalChoice.