I've seen a lot of variety in the way different books/people use set builder notation. Is their any "standard"?(adsbygoogle = window.adsbygoogle || []).push({});

For example, I've seen:

{x | x < -2 or x > 2 }

And somtimes:

{x | x < -2 U x > 2 }

And also:

{x | x < -2 } U {x | x > 2}

Is any one of these more "correct" than the others?

Thanks,

-EP

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# Quick set builder notation question

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