International Journal of Mathematics and Mathematical Sciences
Volume 23 (2000), Issue 4, Pages 253-259
Weak and strong forms of irresolute maps
Departamento of Matemática, Aplicada-IMUFF, Universidade Federal Fluminense, Rua Mário Santos Braga s/no, Niterói CEP: 24020-140, RJ, Brazil
Received 23 March 1998; Revised 29 July 1998
Copyright © 2000 Miguel Caldas Cueva. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
We consider new weak and stronger forms of irresolute and
semi-closure via the concept sg-closed sets which we call
ap-irresolute maps, ap-semi-closed maps and contra-irresolute and
use it to obtain a characterization of semi- spaces.