Is there a half log function $f(x)$ such that $f ( f(x) ) = \ln x$ (or $\log x$ with any base). More generally, is there partial logarithmic function to perform $0.5, 0.3, \pi$ etc of a log function?
Thank you.
2026-03-29 19:07:40.1774811260
Is there a half log function?
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