Definition

Examples

• 数论是数学的一个古老分支。
  shù lùn shì shùxué de yí gè gǔlǎo fēnzhī.
  Number theory is an ancient branch of mathematics.
• 那位数学家专门研究数论。
  Nà wèi shùxuéjiā zhuānmén yánjiū shù lùn.
  That mathematician specializes in number theory.
• 他在数论方面做出了重大贡献。
  Tā zài shù lùn fāngmiàn zuò chū le zhòngdà gòngxiàn.
  He made significant contributions to number theory.