DLMF:4.12.E9

MaRDI QIDQ1755

• Label: DLMF:4.12.E9

Digital Library of Mathematical Functions ID 4.12.E9

${\displaystyle{\displaystyle\psi(x)=\ell+\underbrace{\ln\cdots\ln}_{\ell\text{ times}}x,}}$

Constraint(s)

${\displaystyle{\displaystyle x>1}}$

Symbols List

• ${\displaystyle{\displaystyle\ln\NVar{z}}}$: principal branch of logarithm function
• ${\displaystyle{\displaystyle x}}$: real variable
• ${\displaystyle{\displaystyle\psi(x)}}$: generalized logarithm
• ${\displaystyle{\displaystyle\ell}}$: positive integer (locally)
 

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