Notas de Matemática - N° 226 2003 http://www.saber.ula.ve/handle/123456789/4731 2026-05-27T12:22:40Z 2026-05-27T12:22:40Z Weak open sets: a presentation using operators. Colasante Martínez, María Luisa http://www.saber.ula.ve/handle/123456789/22720 2018-03-14T07:59:25Z 2006-06-13T09:00:00Z Weak open sets: a presentation using operators. Colasante Martínez, María Luisa 2006-06-13T09:00:00Z Notas de Matemática http://www.saber.ula.ve/handle/123456789/22719 2018-03-14T07:59:25Z 2006-06-13T09:00:00Z Notas de Matemática 2006-06-13T09:00:00Z