DLMF:8.8.E14 (Q2546): Difference between revisions

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Property / Symbols used
 
Property / Symbols used: principal branch of logarithm function / rank
 
Normal rank
Property / Symbols used: principal branch of logarithm function / qualifier
 
Defining formula:

ln ⁡ z 𝑧 {\displaystyle{\displaystyle\ln\NVar{z}}}

\ln@@{\NVar{z}}
Property / Symbols used: principal branch of logarithm function / qualifier
 
xml-id: C4.S2.E2.m2adec

Revision as of 13:49, 2 January 2020

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DLMF:8.8.E14
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    Statements

    Defining formula
    ∂ ∂ ⁡ a ⁡ γ * ⁡ ( a , z ) | a = 0 = - E 1 ⁡ ( z ) - ln ⁡ z . evaluated-at partial-derivative 𝑎 incomplete-gamma-star 𝑎 𝑧 𝑎 0 exponential-integral 𝑧 𝑧 {\displaystyle{\displaystyle\left.\frac{\partial}{\partial a}\gamma^{*}\left(a% ,z\right)\right|_{a=0}=-E_{1}\left(z\right)-\ln z.}}
    0 references
    DLMF id
    DLMF:8.8.E14
    0 references
    Symbols used
    exponential integral
    Defining formula
    E 1 ⁡ ( z ) exponential-integral 𝑧 {\displaystyle{\displaystyle E_{1}\left(\NVar{z}\right)}}
    xml-id
    C6.S2.E1.m2adec
    0 references
    incomplete gamma function
    Defining formula
    γ * ⁡ ( a , z ) incomplete-gamma-star 𝑎 𝑧 {\displaystyle{\displaystyle\gamma^{*}\left(\NVar{a},\NVar{z}\right)}}
    xml-id
    C8.S2.E6.m2aadec
    0 references
    principal branch of logarithm function
    Defining formula
    ln ⁡ z 𝑧 {\displaystyle{\displaystyle\ln\NVar{z}}}
    xml-id
    C4.S2.E2.m2adec
    0 references
     
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