Half-exponential function: Difference between revisions

Revision as of 15:23, 24 March 2018

Revision as of 17:56, 7 August 2018

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In mathematics, a '''half-exponential function''' is the [[functional square root]] of an [[exponential function]], that is, a function ''&fnof;'' that, if composed with itself, results in an [[exponential function]]:<ref name="sqrtexp">{{cite journal

|author=Kneser, H. |authorlink=Hellmuth Kneser

|title=Reelle analytische Lösungen der Gleichung ''&phi;''(''&phi;''(''x''))&nbsp;=&nbsp;''e''^''x'' und verwandter Funktionalgleichungen

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Half-exponential functions are used in [[computational complexity theory]] for growth rates "intermediate" between polynomial and exponential.<ref name="miltersen"/>

==See also==

* [[Functional square root]]

==References==