Caldas, Miguel2017-09-252017-09-252001http://revistas.pucp.edu.pe/index.php/promathematica/article/view/8169/8464El artículo no presenta resumenIn 1984 David.A. Rose {3} asked the following question: When a surjection f : X →Y , is weak openness related to the condition Cl(f(U)) f(Cl(U)) for each open U X?. In this note we give an alternative answer to his question.application/pdfspainfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0Matemáticainfo:eu-repo/semantics/articlehttps://purl.org/pe-repo/ocde/ford#1.01.00