Math, asked by kichu1975, 1 year ago

difference between open set and closed set

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Answered by Murugan2078

The union of any number of open sets, or infinitely many open sets, is open. ... A complement of an open set (relative to the space that the topology is defined on) is called a closed set. A set may be both open and closed (a clopen set). The empty set and the full space are examples of sets that are both open and closed.

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