🔢Euler discovered the number e, the base of the natural logarithm.
🔬Euler formulated Euler's identity, linking the exponential function and trigonometric functions.
💡Euler's polyhedral formula relates the vertices, faces, and edges of a polyhedron.
👀Despite losing his vision, Euler remained incredibly productive and continued to publish influential papers.
📚Euler's work is so extensive that it is still being published in the 21st century.