Dear all, I am writing to remind you that the 103rd Peripatetic Seminar on Sheaves and Logic will be held on the weekend of the 7th-8th April 2018 at Masaryk University in Brno, Czech Republic. If you would like to attend or give a talk, it would be best to contact us as soon as possible. Registration instructions are at the webpage https://www.math.muni.cz/~loregianf/PSSL103/PSSL103.php and if you have any queries please do not hesitate to contact one of us directly. On the afternoon of Friday 6th there will be pre-PSSL talks by Moritz Groth and Simon Henry on the theme of higher category theory. We look forward to seeing you in Brno, the organizers John Bourke, Ivan Di Liberti, Simon Henry, Michael Lieberman, Fosco Loregian, Masaryk University. [For admin and other information see: http://www.mta.ca/~cat-dist/ ]