
# 3: Sets


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: Sets is shared under a CC BY-NC-SA 2.0 license and was authored, remixed, and/or curated by Dave Witte Morris & Joy Morris.