CAUTION: The Sender of this email is not from within Dalhousie. Hello all, We've started a community server for category theory, computer science, logic, as well as general science and industry. In just a few days, it has grown into a large and lively place, with people of many backgrounds and interests. Please feel free to join! categorytheory.zulipchat.com <https://categorytheory.zulipchat.com/join/52grbi4jw3b989fywh56pull/> Sincerely, John Baez Christian Williams [For admin and other information see: http://www.mta.ca/~cat-dist/ ]