Boxer, Laurence; Staecker, P. Christopher(Universitat Politècnica de València, 2016-10-03)
[EN] The current paper focuses on fundamental groups and Euler characteristics of various digital models of the 2-dimensional sphere. For all models that we consider, we show that the fundamental groups are trivial, and ...
Boxer, Laurence; Staecker, P. Christopher(Universitat Politècnica de València, 2019-04-01)
[EN] Several recent papers in digital topology have sought to obtain fixed point results by mimicking the use of tools from classical topology, such as complete metric spaces and homotopy invariant fixed point theory. We ...