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交集 — pronunciations, definitions, and tags
HanziPinyinEnglishTags
交集jiāojíintersection (symbol ∩) (set theory)HSK 7, unknown, 18 strokes, rank #14749, Very Hard
jiāojí(jiao1ji2)jiao ji T1
  1. 1intersection (symbol ∩) (set theory)
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March 24, 2026

交集jiāojí(jiao1ji2)

交集 refers to the intersection of two or more sets in mathematics, represented by the symbol ∩. It is commonly used in discussions of set theory, logic, and statistics to describe the common elements shared among the sets.

Strokes18Frequency#14749DifficultyVery Hard
Cultural note

In Chinese education, mathematics is highly emphasized and often taught with a strong focus on set theory. Understanding terms like 交集 is essential for students pursuing advanced studies in mathematics or related fields.

Memory tip

Imagine two overlapping circles representing different sets. The area where they overlap is where they '交' (jiao, to intersect) and form the '集' (ji, collection) of common elements. Visualizing this crossover can help remember both the meaning and pronunciation.

Meanings of 交集

jiāojí(jiao1ji2)
1intersection (symbol ∩) (set theory)
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About 交集

交集Simplified
18Strokes
—Radical
动词dòngcíverb (v.)Part of Speech
#—Frequency Rank
HSK 3.0L7AdvancedCEFRC2

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AI study notes for 交集

Usage Notes

Learners often confuse 交集 with 并集 (bingji, union), which refers to the combination of all elements from both sets. This term is typically used in formal mathematical contexts, so ensure you use it appropriately when discussing academic or technical topics.

HSK Study Tips

Although 交集 is not an HSK word, it connects well with other mathematical vocabulary like 集合 (jihe, set) and 元素 (yuansu, element). Focus on understanding how 交集 operates within the broader framework of set theory to reinforce your grasp of related terms.

Common Mistakes

Learners sometimes mistakenly use 交集 when they mean to refer to 并集 (union), leading to confusion about the intended meaning. Always clarify whether you are discussing shared elements (交集) or the total combination (并集).

AI-enhanced 2026-03-24

Pronunciation of 交集

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Component characters

交jiāoto hand over
HSK 46 strokes亠
View full entry
集jíto gather
HSK 512 strokes隹
View full entry

How to say intersection (symbol ∩) (set theory) in Chinese

“intersection (symbol ∩) (set theory)” in Chinese is交集jiāojí

交集 refers to the intersection of two or more sets in mathematics, represented by the symbol ∩. It is commonly used in discussions of set theory, logic, and statistics to describe the common elements shared among the sets.

When to use 交集

Learners often confuse 交集 with 并集 (bingji, union), which refers to the combination of all elements from both sets. This term is typically used in formal mathematical contexts, so ensure you use it appropriately when discussing academic or technical topics.

What learners get wrong

Learners sometimes mistakenly use 交集 when they mean to refer to 并集 (union), leading to confusion about the intended meaning. Always clarify whether you are discussing shared elements (交集) or the total combination (并集).

Write 交集

交
集

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Frequently asked questions about 交集

交集 is primarily used in academic contexts, especially in mathematics, but can also appear in discussions about data analysis or decision-making where commonalities are highlighted.

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