1. ON SEMICOVERING, SUBSEMICOVERING, AND SUBCOVERING MAPS

M. Kowkabi; B. Mashayekhi; H. Torabi

Volume 7, Issue 2 , Winter and Spring 2020, , Pages 227-244

Abstract
  In this paper, by reviewing the concept of subcovering and semicovering maps, we extend the notion of subcovering map to subsemicovering map. We present some necessary or sufficient conditions for a local homeomorphism to be a subsemicovering map. Moreover, we investigate the relationship between these ...  Read More

2. ON THE CAPACITY OF EILENBERG-MACLANE AND MOORE SPACES

Mojtaba Mohareri; Behrooz Mashayekhi; Hanieh Mirebrahimi

Volume 6, Issue 2 , Winter and Spring 2019, , Pages 131-146

Abstract
  K. Borsuk in 1979, at the Topological Conference in Moscow, introduced concept of the capacity of a compactum and asked some questions concerning properties of the capacity ofcompacta. In this paper, we give partial positive answers to three of these questions in some cases. In fact, by describing spaces ...  Read More