Check out this cool set I came up with!
Check out this cool set I came up with!
![](https://lemmy.blahaj.zone/pictrs/image/amJascBSBL.png?thumbnail=1024&format=webp)
ID: set builder notation with X such that X is not an element of X.
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Check out this cool set I came up with!
ID: set builder notation with X such that X is not an element of X.