there are "Euler angles (to specify the orientation of a rigid body), Euler's theorem (that every rotation has an axis), Euler's equations for motion of fluids, and the Euler-Lagrange equation ...

which neatly describes the arrange­ment of leaves and petals in plants. But the weirdest thing about Euler’s formula—given that it relies on imaginary numbers—is that it’s so immensely ...

No matter how the globe is triangulated, Euler’s formula holds. Euler’s Gem provides a bridge between geometry and topology. In geometry, lengths and angles are fixed. We can move shapes ...

Euler’s Identity has been selected in several surveys as the most beautiful mathematical formula. It is not the appearance or typographical structure that is prized, but the concepts it embodies ...