Leonhard Euler Leonhard Euler l r OY l r German listen April September was a Swiss mathematician, physicist, astronomer, logician and engineer, who made important and influential discoveries in many branches of mathematics, such as infinitesimal calculus and graph theory, while also making pioneering contributions to several branches such as topology and analytic Applied Mathematics Letters ScienceDirect Read the latest articles of Applied Mathematics Letters at ScienceDirect, Elsevier s leading platform of peer reviewed scholarly literature Euler diagram An Euler diagram l r , OY l r is a diagrammatic means of representing sets and their relationships Typically they involve overlapping shapes, and may be scaled, such that the area of the shape is proportional to the number of elements it contains. Leonhard Euler Leonhard Euler Bazel, april Sint Petersburg, september was een Zwitserse wiskundige en natuurkundige die het grootste deel van zijn leven doorbracht in Rusland en Duitsland.Hij wordt algemeen beschouwd als de belangrijkste wiskundige van de e eeuw en als een van de belangrijkste aller tijden Bovendien was hij de meest productieve wiskundige ooit zijn verzameld werk Correspondence of Leonhard Euler with Christian Goldbach When Leonhard Euler first arrived at the Russian Academy of Sciences, at the age of , his career was supported and promoted by the Academy s secretary, the Prussian jurist and amateur mathematician Christian Goldbach . Eulero Leonhard Euler, noto in Italia come Eulero Basilea, aprile San Pietroburgo, settembre , stato un matematico e fisico svizzero. considerato il pi importante matematico del Settecento, e uno dei massimi della storia noto per essere tra i pi prolifici di tutti i tempi e ha fornito contributi storicamente cruciali in svariate aree analisi infinitesimale Leonhard Euler Biography, Education, Contributions Leonhard Euler Leonhard Euler, Swiss mathematician and physicist, one of the founders of pure mathematics He not only made formative contributions to the subjects of geometry, calculus, mechanics, and number theory but also developed methods for solving problems in astronomy and demonstrated practical applications of mathematics. Leonhard Euler Mathematical Genius in the Enlightenment This is the first real biography of Leonhard Euler, and I don t think it s an exaggeration to say that it is the most important book about Euler to appear in any western European language in the past century. Mathematical Notation Past and Future Stephen Wolfram Stephen Wolfram on mathematical notation s development from antiquity through Leibniz, Euler, Peano, modern times, how it is like human language Philosophical Dictionary Erasmus Extrinsic Also see SEP, EB, IEP, and ELC. Eratosthenes BCE African mathematician who discovered a method for identifying prime numbers and calculated the circumference of the earth.