basic open set 예문

예문

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1. The basic open sets of the product topology are cylinder sets, here characterized as:
2. The open sets of " A " ? are precisely the sets expressible as unions of these basic open sets.
3. Every metric space can be given a metric topology, in which the basic open sets are open balls defined by the metric.
4. Each sequence in the bar represents a basic open set of this space, and these basic open sets cover the space by assumption.
5. Each sequence in the bar represents a basic open set of this space, and these basic open sets cover the space by assumption.