Let X be a topological space. Then one of the following conditions does not hold
\(\phi\) and X are closed
Arbitrary intersection of closed sets is closed
—>> Infinite unions of closed sets are closed
Finite unions of closed sets are closed
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Let X be a topological space. Then one of the following conditions does not hold
\(\phi\) and X are closed
Arbitrary intersection of closed sets is closed
—>> Infinite unions of closed sets are closed
Finite unions of closed sets are closed