Ramírez Chávez, Jean Brandon
(Universidad Michoacana de San Nicolás de Hidalgo. Universidad Nacional Autónoma de México, 2020-06)
We study ideals (…) over N with the following property: Given any complete metric space X, if (…). is a family of never dense subspaces of X that satisfy that XA (…) XB when A (…) B, then (…) X. Characterizations are given ...