The basic cardinal invariants of monotonically normal spaces are determined. The gap between cellularity and density is investigated via calibres. (C) 1997 Elsevier Science B.V.
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Univ Autonoma Ciudad Mexico, Acad Matemat, Prolongac San Isidro 151, Mexico City 09790, DF, MexicoUniv Autonoma Ciudad Mexico, Acad Matemat, Prolongac San Isidro 151, Mexico City 09790, DF, Mexico
Fernandez, M.
Sanchez, I.
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Univ Autonoma Metropolitana, Dept Matemat, Av San Rafael Atlixco 186, Mexico City 09340, DF, MexicoUniv Autonoma Ciudad Mexico, Acad Matemat, Prolongac San Isidro 151, Mexico City 09790, DF, Mexico
Sanchez, I.
Tkachenko, M.
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Univ Autonoma Metropolitana, Dept Matemat, Av San Rafael Atlixco 186, Mexico City 09340, DF, MexicoUniv Autonoma Ciudad Mexico, Acad Matemat, Prolongac San Isidro 151, Mexico City 09790, DF, Mexico