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Set theory a branch of mathematics dealing with collections of objects. It was developed in the late 1800s, primarly by the German mathematician [[Georg Cantor]]. This initial attempt became known as "naive set theory" because mathematicians found flaws in it. It was replaced by "axiomatic set theory" in the early 1900s.
Set theory a branch of mathematics dealing with collections of objects.
==History of set theory==
It was developed in the late 1800s, primarly by the German mathematician [[Georg Cantor]]. This initial attempt became known as "naive set theory" because mathematicians found flaws in it. It was replaced by "axiomatic set theory" in the early 1900s.
One paradox in naive set theory was announced by [[Bertrand Russell]] in 1901, and is known as [[Russell's Paradox]].
One paradox in naive set theory was announced by [[Bertrand Russell]] in 1901, and is known as [[Russell's Paradox]].