| 单词 | surjection |
| 释义 | Word Frequency surjection(sɜːˈdʒɛkʃən) noun a mathematical function or mapping for which every element of the image space is a value for some members of the domain See also injection (sense 5), bijection Derived forms surjective (surˈjective) adjective Word origin C20: from sur-1 + -jection, on the model of projection |
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