The Museum of Ideas

The Museum of Ideas

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Shannon Mullen O'Keefe
May 26, 2025
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“In mathematics, an upside-down U symbol (∩) represents the intersection of sets. It indicates the elements that are common to both sets being compared. For example, if set A is {1, 2, 3} and set B is {2, 3, 4}, then the intersection of A and B (A ∩ B) would be {2, 3}”

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