number theory
noun[U]
mathematicsspecializeduk/ˈnʌm.bə ˌθɪə.ri/us/ˈnʌm.bɚ ˌθɪr.i/thestudyof thequalitiesandcharacteristicsofnumbers
数论Branches & types of mathematics
- algebra
 - Cartesian
 - derivative
 - differential calculus
 - differentiate
 - differentiation
 - Euclidean
 - game theory
 - geodetics
 - geometric
 - geometrically
 - geometry
 - mathematician
 - mathematics
 - mensuration
 - mental arithmetic
 - non-Euclidean
 - non-mathematical
 - non-mathematician
 - trig