Question

what is a closed set​

Answer 1

Answer:

In geometry, topology, and related branches of mathematics, a closed set is a set whose complement is an open set. In a topological space, a closed set can be defined as a set which contains all its limit points. In a complete metric space, a closed set is a set which is closed under the lim

Step-by-step explanation:

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Answer 2

Answer:

In geometry,topology,and related branches of mathemathics, a closed set is a set whose complement is an open set. In topological space,closed set can be defined as a set which contains all it's limit points.In a complete metric space , a closed set is a set which is closed under the limit operation.