| 1 | The Beautiful Equation: Euler' s Identity | |
| 2 | Neither Eular circuit nor Eular path exists in this graph, since there are more than two vertices with odd degree. | |
| 3 | In the second part, we give some important definitions about the two-dimensional simplified Euler equation. | |
| 4 | Theoretical physicist Richard Feynman was a huge fan and called it a "jewel" and a "remarkable" formula. | |
| 5 | Also called Euler's relation, or the Euler equation of complex analysis, this bit of mathematics enjoys accolades across geeky disciplines. |