Proceedings of the International Conference on Semigroups, Acts and Categories with Applications to Graphs to celebrate the 65th birthdays of Mati Kilp and Ulrich Knauer

Sisukord:The main speakers at the conference were Victoria Gould (University of York, UK), Mark Lawson (Heriot-Watt University, Edinburgh, UK) and Aleš Pultr (Charles University, Prague, Czech Republic).