EULER, Éléments d'algèbre, 1798

Leonhard Euler's (1707-1783) Éléments d'algèbre (Elements of Algebra) is one of the foundational works in the history of mathematics, widely praised for its pedagogical clarity and systematic approach to algebra. Originally published in Russian and German, this work made algebra accessible to a broader audience than the treatises of its time. It covers arithmetic, number theory, polynomial equations, and other topics, helping to standardize algebraic notation and methods.