List of mathematical theories

Sure! Below is a list of various mathematical theories that are foundational or significant in different areas of mathematics: ### Algebra 1. **Group Theory**: Studies algebraic structures known as groups, focusing on symmetry and operations. 2. **Ring Theory**: Examines rings, algebraic structures equipped with addition and multiplication operations. 3. **Field Theory**: Investigates fields, which are algebraic structures that generalize the concepts of arithmetic.