definition rOBP ≝ Apply (category2_of_category1 BP) OBP BP_to_OBP.
include "formal_topology/o-basic_pairs_to_o-basic_topologies.ma".
definition rOBP ≝ Apply (category2_of_category1 BP) OBP BP_to_OBP.
include "formal_topology/o-basic_pairs_to_o-basic_topologies.ma".