User contributions for 2600:6C58:67F:F187:3464:8FAC:161B:5EC0
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14 October 2019
- 09:0709:07, 14 October 2019 diff hist +53,584 N Axiom of choice There is more than one way to create a Cartesian product, ie more than one way to put the sets in order. Changed 'the' to 'a' current