Selection principle

In mathematics, selection principles deal with properties characterized by the possibility of obtaining mathematically significant objects by selecting from sequences of sets. The studied properties mainly include covering properties, measure- and category-theoretic properties, and local properties in topological spaces, especially functions spaces.

单词	Selection principle
释义	Selection principle 英语百科 Selection principle In mathematics, selection principles deal with properties characterized by the possibility of obtaining mathematically significant objects by selecting from sequences of sets. The studied properties mainly include covering properties, measure- and category-theoretic properties, and local properties in topological spaces, especially functions spaces.
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