Dear Category Theorists, registration for the PSSL 100 in Cambridge (21/22 May 2016) is now open. https://www.dpmms.cam.ac.uk/~jg352/PSSL100/pssl100.html We look forward to seeing you there. Julia -- Dr Julia Goedecke DPMMS, Centre for Mathematical Sciences University of Cambridge Wilberforce Road CB3 0WB jg352@cam.ac.uk [For admin and other information see: http://www.mta.ca/~cat-dist/ ]