For
전사,surjection 전사함수,surjective_function
단사,injection 단사함수,injective_function
전단사,bijection 전단사함수,bijective_function

WtEn:surjection
surjective adj.

curr. see: 함수,function#s-5 and/or 사상,map

chk, tmp from https://blog.naver.com/hafs_snu/221085743625
{
전사함수의 정의
$\forall y\in Y \exists x\in X (f(x)=y)$
}

AKA onto

AKA 위로의 함수, onto function
공역,codomain과 치역,range이 같은 함수.

//수학백과:
선택공리,choice_axiom 및 절단,section과 rel.
AoC가 있어야/AoC를 가정해야 역함수,inverse_function의 존재를 상정/확신/(?) 가능? (from cz)

[https]수학백과: 전사함수(https://terms.naver.com/entry.naver?docId=3338293&cid=47324&categoryId=47324)
WpEn:Surjective_function
WpKo:전사_함수
https://mathworld.wolfram.com/Surjection.html
https://encyclopediaofmath.org/wiki/Surjection
https://planetmath.org/surjective
https://artofproblemsolving.com/wiki/index.php/Surjection

https://en.citizendium.org/wiki/Surjective_function
https://ncatlab.org/nlab/show/surjection
Retrieved from http://tomoyo.ivyro.net/123/wiki.php/전사,surjection
last modified 2023-10-19 05:51:47