ALEXANDRIA - Large Scale Formal Proof for the Working Mathematician Angeliki Koutsoukou-Argyraki University of Cambridge ak2110@cam.ac.uk Abstract ALEXANDRIA is a new ERC project at the University of Cambridge led by Lawrence Paulson aiming at the creation of a proof development environment for working mathematicians through a collaboration of mathematicians and computer scientists. This will be achieved by for- malizing mathematical proofs with the proof assistant Isabelle. The focus of the project is the management and use of large-scale mathe- matical knowledge, both as theorems and as algorithms. In this talk we will briefly discuss some of our objectives and methods. Copyright c by the paper’s authors. Copying permitted for private and academic purposes. In: O. Hasan, C. Kaliszyk, A. Naumowicz (eds.): Proceedings of the Workshop Formal Mathematics for Mathematicians (FMM), Hagenberg, Austria, 13-Aug-2018, published at http://ceur-ws.org