- 集合论 jíhélùn set theorythe mathematical study of sets
- 子集合 zǐjíhé subsetsubset (mathematics)
- 整数集合 zhěngshùjíhé set of integersthe set containing all integers in mathematics
- 点集合 diǎnjíhé point set(math.) point set
- 集合体 jíhétǐ aggregatea collective whole or entity formed by combining various different elements, individuals, or parts
- 集合名词 jíhémíngcí collective nouncollective noun (linguistics)
