Almost cl-supercontinuous functions

Reilly and Vamanamurthy introduced the class of 'clopen maps' (� 'cl-supercontinuous functions'). Subsequently gen- eralizing clopen maps, Ekici defined and studied almost clopen maps (� almost cl-supercontinuous functions). Continuing in the spirit of Ekici, here basic properties of almost clopen maps are studied. Behav- ior of separation axioms under almost clopen maps is elaborated. The interrelations between direct and inverse transfer of topological prop- erties under almost clopen maps are investigated. The results obtained in the process generalize, improve and strengthen several known results in literature including those of Ekici, Singh, and others.