3: Sets
- Page ID
- 23898
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In mathematics these days, essentially everything is a set. Some knowledge of set theory is a necessary part of the background everyone needs for further study of mathematics.
Herbert B. Enderton (1936–2010), American mathematician
Elements of Set Theory
- 3.3: Operations on Sets
- There are several important ways that a new set can be made from sets that you already have. Any method of doing this is called a .