%   ORIGINAL: h4/rich__list/OR__EL__FOLDL
% Assm: HL_TRUTH: T
% Assm: HL_FALSITY: ~F
% Assm: HL_BOOL_CASES: !t. (t <=> T) \/ (t <=> F)
% Assm: HL_EXT: !f g. (!x. f x = g x) ==> f = g
% Assm: h4/bool/ETA__AX: !t. (\x. t x) = t
% Assm: h4/combin/I__THM: !x. h4/combin/I x = x
% Assm: h4/rich__list/OR__EL__DEF: h4/rich__list/OR__EL = h4/list/EXISTS h4/combin/I
% Assm: h4/rich__list/EXISTS__FOLDL: !l P. h4/list/EXISTS P l <=> h4/list/FOLDL (\l_27 x. l_27 \/ P x) F l
% Goal: !l. h4/rich__list/OR__EL l <=> h4/list/FOLDL $or F l
%   PROCESSED
% Assm [HLu_TRUTH]: T
% Assm [HLu_FALSITY]: ~F
% Assm [HLu_BOOLu_CASES]: !t. (t <=> T) \/ (t <=> F)
% Assm [HLu_EXT]: !f g. (!x. happ f x = happ g x) ==> f = g
% Assm [h4s_bools_ETAu_u_AX]: !t x. happ t x = happ t x
% Assm [h4s_combins_Iu_u_THM]: !x. happ h4/combin/I x = x
% Assm [h4s_richu_u_lists_ORu_u_ELu_u_DEF]: h4/rich__list/OR__EL = h4/list/EXISTS h4/combin/I
% Assm [h4s_richu_u_lists_EXISTSu_u_FOLDL]: !_1. (!l_27 P x. happ (happ (happ _1 l_27) P) x <=> l_27 \/ happ P x) ==> (!_0. (!P l_27. happ (happ _0 P) l_27 = happ (happ _1 l_27) P) ==> (!l P. happ (h4/list/EXISTS P) l <=> h4/list/FOLDL (happ _0 P) F l))
% Goal: !l. happ h4/rich__list/OR__EL l <=> h4/list/FOLDL $or F l
fof(aHLu_TRUTH, axiom, p(s(t_bool,t))).
fof(aHLu_FALSITY, axiom, ~ (p(s(t_bool,f)))).
fof(aHLu_BOOLu_CASES, axiom, ![V_t]: (s(t_bool,V_t) = s(t_bool,t) | s(t_bool,V_t) = s(t_bool,f))).
fof(aHLu_EXT, axiom, ![TV_Q163635,TV_Q163631]: ![V_f, V_g]: (![V_x]: s(TV_Q163631,happ(s(t_fun(TV_Q163635,TV_Q163631),V_f),s(TV_Q163635,V_x))) = s(TV_Q163631,happ(s(t_fun(TV_Q163635,TV_Q163631),V_g),s(TV_Q163635,V_x))) => s(t_fun(TV_Q163635,TV_Q163631),V_f) = s(t_fun(TV_Q163635,TV_Q163631),V_g))).
fof(ah4s_bools_ETAu_u_AX, axiom, ![TV_u_27b,TV_u_27a]: ![V_t, V_x]: s(TV_u_27b,happ(s(t_fun(TV_u_27a,TV_u_27b),V_t),s(TV_u_27a,V_x))) = s(TV_u_27b,happ(s(t_fun(TV_u_27a,TV_u_27b),V_t),s(TV_u_27a,V_x)))).
fof(ah4s_combins_Iu_u_THM, axiom, ![TV_u_27a]: ![V_x]: s(TV_u_27a,happ(s(t_fun(TV_u_27a,TV_u_27a),h4s_combins_i),s(TV_u_27a,V_x))) = s(TV_u_27a,V_x)).
fof(ah4s_richu_u_lists_ORu_u_ELu_u_DEF, axiom, s(t_fun(t_h4s_lists_list(t_bool),t_bool),h4s_richu_u_lists_oru_u_el) = s(t_fun(t_h4s_lists_list(t_bool),t_bool),h4s_lists_exists(s(t_fun(t_bool,t_bool),h4s_combins_i)))).
fof(ah4s_richu_u_lists_EXISTSu_u_FOLDL, axiom, ![TV_u_27a]: ![V_uu_1]: (![V_lu_27, V_P, V_x]: (p(s(t_bool,happ(s(t_fun(TV_u_27a,t_bool),happ(s(t_fun(t_fun(TV_u_27a,t_bool),t_fun(TV_u_27a,t_bool)),happ(s(t_fun(t_bool,t_fun(t_fun(TV_u_27a,t_bool),t_fun(TV_u_27a,t_bool))),V_uu_1),s(t_bool,V_lu_27))),s(t_fun(TV_u_27a,t_bool),V_P))),s(TV_u_27a,V_x)))) <=> (p(s(t_bool,V_lu_27)) | p(s(t_bool,happ(s(t_fun(TV_u_27a,t_bool),V_P),s(TV_u_27a,V_x)))))) => ![V_uu_0]: (![V_P, V_lu_27]: s(t_fun(TV_u_27a,t_bool),happ(s(t_fun(t_bool,t_fun(TV_u_27a,t_bool)),happ(s(t_fun(t_fun(TV_u_27a,t_bool),t_fun(t_bool,t_fun(TV_u_27a,t_bool))),V_uu_0),s(t_fun(TV_u_27a,t_bool),V_P))),s(t_bool,V_lu_27))) = s(t_fun(TV_u_27a,t_bool),happ(s(t_fun(t_fun(TV_u_27a,t_bool),t_fun(TV_u_27a,t_bool)),happ(s(t_fun(t_bool,t_fun(t_fun(TV_u_27a,t_bool),t_fun(TV_u_27a,t_bool))),V_uu_1),s(t_bool,V_lu_27))),s(t_fun(TV_u_27a,t_bool),V_P))) => ![V_l, V_P]: s(t_bool,happ(s(t_fun(t_h4s_lists_list(TV_u_27a),t_bool),h4s_lists_exists(s(t_fun(TV_u_27a,t_bool),V_P))),s(t_h4s_lists_list(TV_u_27a),V_l))) = s(t_bool,h4s_lists_foldl(s(t_fun(t_bool,t_fun(TV_u_27a,t_bool)),happ(s(t_fun(t_fun(TV_u_27a,t_bool),t_fun(t_bool,t_fun(TV_u_27a,t_bool))),V_uu_0),s(t_fun(TV_u_27a,t_bool),V_P))),s(t_bool,f),s(t_h4s_lists_list(TV_u_27a),V_l)))))).
fof(ch4s_richu_u_lists_ORu_u_ELu_u_FOLDL, conjecture, ![V_l]: s(t_bool,happ(s(t_fun(t_h4s_lists_list(t_bool),t_bool),h4s_richu_u_lists_oru_u_el),s(t_h4s_lists_list(t_bool),V_l))) = s(t_bool,h4s_lists_foldl(s(t_fun(t_bool,t_fun(t_bool,t_bool)),d_or),s(t_bool,f),s(t_h4s_lists_list(t_bool),V_l)))).
