Golden Ratio
φ
Type it
| Unicode | U+03C6 | |
|---|---|---|
| LaTeX | \varphi | |
| HTML entity | φ | |
| Character | φ |
Meaning
The number (1 + √5)/2, approximately 1.61803. It is the positive solution of x² = x + 1. Compare with Pi and Euler's Number.
How to read it
φ = (1 + √5)/2
is read “phi equals one plus root five, over two”.