30 ML {*

    31 fun define_fv_alpha_export dt binds bns ctxt =

    32 let

    33   val (((fv_ts_loc, fv_def_loc), alpha), ctxt') =

    34     define_fv_alpha dt binds bns ctxt;

    35   val alpha_ts_loc = #preds alpha

    36   val alpha_induct_loc = #induct alpha

    37   val alpha_intros_loc = #intrs alpha;

    38   val alpha_cases_loc = #elims alpha

    39   val morphism = ProofContext.export_morphism ctxt' ctxt;

    40   val fv_ts = map (Morphism.term morphism) fv_ts_loc;

    41   val fv_def = Morphism.fact morphism fv_def_loc;

    42   val alpha_ts = map (Morphism.term morphism) alpha_ts_loc;

    43   val alpha_induct = Morphism.thm morphism alpha_induct_loc;

    44   val alpha_intros = Morphism.fact morphism alpha_intros_loc

    45   val alpha_cases = Morphism.fact morphism alpha_cases_loc

    46 in

    47   (((fv_ts, fv_def), ((alpha_ts, alpha_intros), (alpha_cases, alpha_induct))), ctxt')

    48 end;

    49 *}

    50