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idempotent_function [2014/02/08 18:34] nikolaj |
idempotent_function [2014/03/21 11:11] |
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| - | ===== Idempotent function ===== | ||
| - | ==== Set ==== | ||
| - | | @#88DDEE: $X,Y$ ... set | | ||
| - | | @#FFBB00: $ f\in \mathrm{it}(X,X) $ | | ||
| - | |||
| - | | @#55EE55: $ f:X\to Y $ | | ||
| - | | @#55EE55: $ f\circ f=f $ | | ||
| - | |||
| - | ==== Discussion ==== | ||
| - | ==== Parents ==== | ||
| - | === Subset of === | ||
| - | [[Unary operation]] | ||
