Lorenzo Andreaus
  • Member for 2 years, 7 months
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When do union and intersection commute?
3 votes

I know it is an old topic, but I was computing $\left(\bigcup_{i=1}^m A_i\right)\setminus\left(\bigcup_{j=1}^n B_j\right)$ and found something similar to this question. One can calculate $\left(\...

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