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Fungrim entry: ec5a44

λ ⁣(τ2τ+1)=λ(τ)\lambda\!\left(\frac{\tau}{2 \tau + 1}\right) = \lambda(\tau)
Assumptions:τH\tau \in \mathbb{H}
TeX:
\lambda\!\left(\frac{\tau}{2 \tau + 1}\right) = \lambda(\tau)

\tau \in \mathbb{H}
Definitions:
Fungrim symbol Notation Short description
ModularLambdaλ(τ)\lambda(\tau) Modular lambda function
HHH\mathbb{H} Upper complex half-plane
Source code for this entry:
Entry(ID("ec5a44"),
    Formula(Equal(ModularLambda(Div(tau, Add(Mul(2, tau), 1))), ModularLambda(tau))),
    Variables(tau),
    Assumptions(Element(tau, HH)))

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2019-12-30 15:00:46.909060 UTC