Special issue: TACT 2012 - Topology, Algebra and Category Theory

摘要

In September of 2012 a conference on Topology, Algebra and Category Theory - styled TACT 2012 -was held at the University of South Africa (Unisa). The conference was dedicated to the memory of Sergio Salbany who served Unisa for a number of years, and it was attended by mathematicians from 8 different countries. This special issue of Topology and its Applications opens with an article on the life and work of Sergio Salbany written by one of the guest editors, Guillaume Briimmer. Apart from that, it consists of 15 research articles which were refereed in accordance with the high standards of this journal. We extend our thanks to the authors of the papers, and we express our indebtedness to the referees for their most valuable labour.