North British Semigroups and Applications Network

NBSAN is a network of researchers in Scotland and Northern England with interests in semigroup theory and its applications. It is funded by grants from the London Mathematical Society and Edinburgh Mathematical Society, and organises about 3 meetings per year in different locations around the region. The main participant universities are Heriot-Watt, Manchester, St Andrews and York, but our activities are open to all interested researchers and we especially welcome participation by graduate students. The next NBSAN meeting will be held in York on Wednesday 25th November 2009. The provisional timetable is: 11:45-12:25 (Roger Kirk Centre) Early arrivers meet for lunch 12:25-12:30 (Room P/X/001) Welcome 12:30-13:20 (Room P/X/001) Jim Renshaw (Southampton) - Adequate transversals of abundant semigroups 13:30-13:55 (Room P/X/001) Claire Cornock (York) - Structure theorems for proper restriction semigroups 14:00-14:15 (Physics Concourse) Coffee and Tea 14:15-14:40 (Room P/T/005) Lubna Shaheen (York) - Perfection for pomonoids 14:45-15:35 (Room P/T/005) Michael Hoffmann (Leicester) - Hyperbolic monoids 15:45-16:15 (Physics Concourse) Coffee and Tea 16:15-16:40 (Room P/T/005) Marianne Johnson (Manchester) - Tropical matrix algebra 16:45-17:35 (Room P/T/005) Nick Gilbert (Heriot-Watt) - Approaches to tiling semigroups All talks are in the Physics and Electronics Building, but please note the change of room after the first coffee break. Here is some practical information on travelling to the University and the map of the Heslington Campus. For those able to stay after the meeting, we will be going out for an early dinner in the centre of York. We have limited funding available to support the attendance costs of UK-based graduate students. If you would like to be considered for funding, please contact Mark Kambites with a rough estimate of your attendance costs. Future Meetings To receive announcements of future events, please enter your name and email address below and click "Subscribe". Alternatively, you can email Mark Kambites. Name: Email: Past Meetings The third NBSAN meeting was held on 23rd July 2009 at Heriot-Watt University in Edinburgh, organised by Mark Lawson. The speakers were: Chris Eilbeck (Heriot-Watt) - Weierstrass arithmetic semigroups and algebraic curves Jennie Hansen (Heriot-Watt) - Using probability theory to study the full transformation monoid Peter Higgins (Essex) - Set products in transformation semigroups Stuart Margolis (Bar-Ilan) - On some monoids associated to Coxeter groups James Mitchell (St Andrews) - Generating uncountable transformation semigroups The second NBSAN meeting was held in St Andrews on 16th and 17th April 2009. The speakers were: João Araújo (Lisbon) - Guess Who Alan Cain (Lisbon) - Automaton Semigroups Robert Gray (St Andrews) - Homotopical and Homological Finiteness Conditions of Monoids and their Subgroups Mark Kambites (Manchester) - Free Adequate Semigroups Vesna Kilibarda (Indiana Northwest) - Ends for Semigroups and Monoids Valdis Laan (Tartu) - Tensor Products and Preservation of Weighted Limits for S-posets Mark Lawson (Heriot-Watt, expository talk) - The Morita Theory of Regular Semigroups László Márki (Rényi Institute) - A Matrix Construction for certain Inverse Monoids with an Application in Universal Algebra The inaugural NBSAN meeting was held in York on 28th January 2009, and was dedicated to the memory of Professor Douglas Munn (1929-2008). The speakers were: John Fountain (York, expository talk) - The Mathematical Work of Douglas Munn and its Influence Nik Ruskuc (St Andrews, open problem talk) - One Relation Semigroups Rebecca Noonan Heale (Heriot-Watt) - Green's Relations for Semigroup Graph Expansions Yann H. Peresse (St Andrews) - Generating Transformation Semigroups using Endomorphisms of Preorders, Graphs and Similarity Relations Pedro V. Silva (Porto) - The Generalized Conjugacy Problem for Virtually Free Groups Jorge Almeida (Porto) - The Mysteries of Free Profinite Semigroups: a Sneak Preview