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4 (* ||A|| A project by Andrea Asperti *)
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15 include "basic_2/rt_computation/fpbg_fpbs.ma".
17 (* PROPER PARALLEL RST-COMPUTATION FOR CLOSURES *****************************)
19 (* Main properties **********************************************************)
21 theorem fpbg_trans: ∀h,o. tri_transitive … (fpbg h o).
22 /3 width=5 by fpbg_fpbs_trans, fpbg_fwd_fpbs/ qed-.