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idempotent_function [2014/02/08 18:34]
nikolaj
idempotent_function [2014/02/08 18:35]
nikolaj
Line 1: Line 1:
 ===== Idempotent function ===== ===== Idempotent function =====
 ==== Set ==== ==== Set ====
-| @#88DDEE: $X,Y$ ... set |+| @#88DDEE: $X$ ... set |
  
-| @#FFBB00: $ f\in \mathrm{it}(X,X) $ |+| @#FFBB00: $ f\in \mathrm{it}(X) $ |
  
-| @#55EE55: $ f:​X\to ​$ |+| @#55EE55: $ f:​X\to ​$ |
 | @#55EE55: $ f\circ f=f $ | | @#55EE55: $ f\circ f=f $ |
  
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