Dear colleagues and friends, I am writing to let you know that the next Peripatetic Seminar on Sheaves and Logic (PSSL), the 101st, will be held at the School of Mathematics of the University of Leeds during the weekend of September 16th-17th, 2017. Further details will be available in due course. In the meantime, please do not hesitate to contact me if you have any queries. With best regards, Nicola === Dr Nicola Gambino School of Mathematics, University of Leeds [For admin and other information see: http://www.mta.ca/~cat-dist/ ]