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Fungrim entry: e9a269

φ=15(η(i)η ⁣(5i))2\varphi = \frac{1}{5} {\left(\frac{\eta(i)}{\eta\!\left(5 i\right)}\right)}^{2}
TeX:
\varphi = \frac{1}{5} {\left(\frac{\eta(i)}{\eta\!\left(5 i\right)}\right)}^{2}
Definitions:
Fungrim symbol Notation Short description
GoldenRatioφ\varphi The golden ratio (1.618...)
Powab{a}^{b} Power
DedekindEtaη(τ)\eta(\tau) Dedekind eta function
ConstIii Imaginary unit
Source code for this entry:
Entry(ID("e9a269"),
    Formula(Equal(GoldenRatio, Mul(Div(1, 5), Pow(Div(DedekindEta(ConstI), DedekindEta(Mul(5, ConstI))), 2)))))

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2019-10-05 13:11:19.856591 UTC