surjection
名词
英 [sɜː'dʒekʃən] 美 [sə'dʒekʃən]
基本释义
[数]满射
词根词缀
前缀
sur-
在...之上,超过
+
词根
ject
投掷,射出
+
后缀
ion
表行为或状态
sur- + ject + ion = surjection
网络释义
在数学中,指一种函数关系,其中每个值域元素都至少有一个定义域元素与之对应。
Wiktionary英语原文词典
该词在Wiktionary英文原文中有详细的英文释义、词形变化、词源和词汇关系。
查看英文原文词典详情例句
1、In mathematics, a surjection is a function that maps every element in the codomain to at least one element in the domain.
在数学中,满射是一种函数,它将值域中的每个元素映射到至少一个定义域中的元素。
2、A surjection is also known as an "onto" function, as it covers the entire range of the codomain.
满射也被称为"onto"函数,因为它覆盖了整个值域的范围。
在数学中,满射是一种函数,它将值域中的每个元素映射到至少一个定义域中的元素。
2、A surjection is also known as an "onto" function, as it covers the entire range of the codomain.
满射也被称为"onto"函数,因为它覆盖了整个值域的范围。
实用场景例句
商务邮件
The data mapping from the user table to the role table must be a surjection to ensure every role is assigned.
从用户表到角色表的数据映射必须是满射,以确保每个角色都被分配到。
学术写作
To prove that the function is a surjection, we must demonstrate that every element in the codomain has a preimage.
为了证明该函数是满射,我们必须证明陪域中的每个元素都有一个原像。
旅游出行
The guide mapped every tourist destination to at least one available hotel, creating what a mathematician might call a surjection.
导游将每个旅游目的地都映射到至少一家可用酒店,这创造了数学家可能称之为满射的关系。
日常对话
I tried to explain surjection to my little brother using a pizza topping analogy, but he just got confused.
我试着用披萨配料的类比向弟弟解释满射,但他完全听懵了。
社交媒体
Just nailed my math exam on bijections and surjections! My brain is officially fried. 🤯
刚刚搞定了数学考试里的双射和满射题!我的大脑正式烧焦了。🤯
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