Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
|
injective_function [2013/08/30 14:35] nikolaj |
injective_function [2014/02/08 02:42] nikolaj |
||
|---|---|---|---|
| Line 1: | Line 1: | ||
| ===== Injective function ===== | ===== Injective function ===== | ||
| - | ==== Definition ==== | + | ==== Set ==== |
| | @#88DDEE: $X,Y$ | | | @#88DDEE: $X,Y$ | | ||
| Line 11: | Line 11: | ||
| ==== Discussion ==== | ==== Discussion ==== | ||
| === Predicates === | === Predicates === | ||
| - | | @#EEEE55: $Y...\mathrm{countable}\equiv \mathrm{Injective}(\mathbb N,Y)\ne\emptyset$ | | + | | @#EEEE55: $Y$ ...countably infinite $\equiv (\mathrm{Injective}(\mathbb N,Y)\ne\emptyset) $ | |
| - | ==== Context ==== | + | | @#EEEE55: $Y$ ... countable $\equiv$ ($Y$ ...finite) $\lor$ ($Y$ ...countably infinite) | |
| + | ==== Parents ==== | ||
| === Requirements === | === Requirements === | ||
| [[Function]] | [[Function]] | ||
