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Fungrim entry: 9bb960

Symbol: EisensteinG Gk ⁣(τ)G_{k}\!\left(\tau\right) Eisenstein series
The Eisenstein series Gk ⁣(τ)G_{k}\!\left(\tau\right) is defined for even integers k2k \ge 2 and τ\tau in the upper half-plane.
The functions Gk ⁣(τ)G_{k}\!\left(\tau\right) and Ek ⁣(τ)E_{k}\!\left(\tau\right) are the same up to a normalizing factor.
Fungrim symbol Notation Short description
EisensteinGGk ⁣(τ)G_{k}\!\left(\tau\right) Eisenstein series
EisensteinEEk ⁣(τ)E_{k}\!\left(\tau\right) Normalized Eisenstein series
Source code for this entry:
    SymbolDefinition(EisensteinG, EisensteinG(k, tau), "Eisenstein series"),
    Description("The Eisenstein series", EisensteinG(k, tau), "is defined for even integers", GreaterEqual(k, 2), "and", tau, "in the upper half-plane."),
    Description("The functions", EisensteinG(k, tau), "and", EisensteinE(k, tau), "are the same up to a normalizing factor."))

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2021-03-15 19:12:00.328586 UTC