src/HOLCF/Pcpo.thy

Now use _irrefl instead of _anti_refl

Pcpo = Porder +

classes pcpo < po
arities void :: pcpo

consts  
        UU :: "'a::pcpo"        

rules

        minimal "UU << x"       
        cpo     "is_chain(S) ==> ? x. range(S) <<| (x::'a::pcpo)" 

inst_void_pcpo  "(UU::void) = UU_void"

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end