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Fungrim entry: a91200

π26=p(11p2)1\frac{{\pi}^{2}}{6} = \prod_{p} {\left(1 - \frac{1}{{p}^{2}}\right)}^{-1}
TeX:
\frac{{\pi}^{2}}{6} = \prod_{p} {\left(1 - \frac{1}{{p}^{2}}\right)}^{-1}
Definitions:
Fungrim symbol Notation Short description
Powab{a}^{b} Power
Piπ\pi The constant pi (3.14...)
PrimeProductpf(p)\prod_{p} f(p) Product over primes
Source code for this entry:
Entry(ID("a91200"),
    Formula(Equal(Div(Pow(Pi, 2), 6), PrimeProduct(Pow(Sub(1, Div(1, Pow(p, 2))), -1), For(p)))))

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2020-08-27 09:56:25.682319 UTC