Vincenzo De Risi is currently Research Fellow at the French CNRS. He has previously been Research Director at the Max Planck Institute for The History of Science in Berlin (2010-2016), fellow of the Max Planck Institute for Mathematics in the Sciences in Leipzig and invited Leibniz-Professor in the latter city. He worked extensively on the history of geometry and geometrical epistemology from Antiquity to the Early Modern Age, and in particular on Leibniz's analysis situs, and the discovery of non-Euclidean geometry. His main publications are Geometry and Monadology: Leibniz's Analysis Situs and Philosophy of Space (2007), Leibniz on the Parallel Postulate and the Foundations of Geometry (2015), a commented edition and translation of Saccheri's masterwork on non-Euclidean geometry (Euclid vindicated from Every Blemish, 2014), and a collection of essays on geometry and space (Mathematizing Space: The Objects of Geometry from Antiquity to the Early Modern Age, 2015), all published by Birkhäuser. He has recently published a long essay on the tradition of Euclid's Elements (The Development of Euclidean Axiomatics, "Archive for History of Exact Sciences", 2016)