2009/08/23 by Peter Selinger · 1 citation
Mathematics · #math.CT #msc:18D10
paper · pdf · doi:10.1007/978-3-642-12821-9_4
published as Springer Lecture Notes in Physics 813, pp. 289-355, 2011
arxiv created 2009/08/23 · arxiv updated 2012/07/31
This article is intended as a reference guide to various notions of monoidal categories and their associated string diagrams. It is hoped that this will be useful not just to mathematicians, but also to physicists, computer scientists, and others who use diagrammatic reasoning. We have opted for a somewhat informal treatment of topological notions, and have omitted most proofs. Nevertheless, the exposition is sufficiently detailed to make it clear what is presently known, and to serve as a starting place for more in-depth study. Where possible, we provide pointers to more rigorous treatments in the literature. Where we include results that have only been proved in special cases, we indicate this in the form of caveats.