TeX:
\pi = 2 \prod_{k=1}^{\infty} \frac{4 {k}^{2}}{4 {k}^{2} - 1}Definitions:
| Fungrim symbol | Notation | Short description |
|---|---|---|
| ConstPi | The constant pi (3.14...) | |
| Pow | Power | |
| Infinity | Positive infinity |
Source code for this entry:
Entry(ID("69fe63"),
Formula(Equal(ConstPi, Mul(2, Product(Div(Mul(4, Pow(k, 2)), Sub(Mul(4, Pow(k, 2)), 1)), Tuple(k, 1, Infinity))))))