‎عائلة الرياضيات‎ on Instagram: "Leonard Euler, born on April 15, 1707, in Basel, Switzerland, was a brilliant Swiss mathematician and physicist who transformed science despite losing his eyesight in his thirties. He produced over 800 papers on calculus, graph theory, mechanics, optics, and astronomy, introducing notations like π, f(x), ∑, and e. Famous for Euler’s formula (e^(iπ) + 1 = 0) and solving the Basel problem, he founded graph theory with the Seven Bridges of Königsberg. Euler worked i