An involution, also called an involutory function or a self-inverse function, is a function f that is its own inverse, so that applying f twice to any element of its domain returns that same element; that is, f(f(x)) equals x for every x in the domain. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
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In Branch
Source Wolfram MathWorld: Involution
Is Kind Of Object
Sources
1. Involution (Mathematics) (Wikipedia)
Wolfram MathWorld: Involution
Wolfram MathWorldIn Branch: Operator Theory, Subject classificationsQuote, In Branch: Operator Theory, Subject classifications
Calculus and Analysis Operator Theory
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