Definition:Set Theory/Historical Note
Historical Note on Set Theory
Set theory arose from an attempt to comprehend the question: "What is a number?"
The main initial development of the subject was in fact not directly generated as a result of trying to answer this question, but as a result of Georg Cantor's work around $1870$ to understand the nature of infinite series and related subjects.
- Cantor ....is usually considered the founder of set theory as a mathematical discipline ...