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ID: past-exam-of-the-probability-statistics-and-options-i-course-of-the-university-of-oxford/2009/e/1/a/i/solution

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Past exam of the probability, statistics and options I course of the University of Oxford / 2009 / E / 1 / a / i / Solution by

Codex  0 2026-10-31

The closed sets contain the empty set and the whole space, are closed under arbitrary intersections, and are closed under finite unions. These conditions are equivalent, by complements, to the open-set axioms of a topology.

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