@UNPUBLISHED{publication1, title = "Entourages, density, Cauchy structure, and completion", author = "{PICADO, Jorge} and {PULTR, Ales}", year = "2018-05-28", abstract = " We study uniformities and quasi-uniformities (uniformities without the symmetry axiom) in the common language of entourages. The techniques developed allow for a general theory in which uniformities are the symmetric part. In particular we have a natural Cauchy structure independent of symmetry and a very simple general completion procedure (perhaps more transparent and simpler than the usual symmetric one). ", url = "http://www.mat.uc.pt/preprints/eng\_2018.html", note = "" }