What is a surjective function in mathematics?

Q: What is a surjective function in mathematics?


A: A surjective function in mathematics is a function f: A → B with the property that for every element b in the codomain B, there is at least one element a in the domain A such that f(a)=b.

Q: What is the significance of a surjective function in mathematics?


A: A surjective function ensures that no element in the codomain is unmapped and that the range and codomain of f are the same set.

Q: What is the origin of the term surjection?


A: The term surjection was introduced by the group of mathematicians called Nicholas Bourbaki.

Q: What is the meaning of the French prefix sur in surjective?


A: The French prefix sur means above or onto.

Q: Why was the term surjective chosen for this kind of function?


A: The term surjective was chosen for this kind of function because a surjective function maps its domain onto its codomain.

Q: Who published a series of books on modern advanced mathematics in the 1930s?


A: The group of mathematicians called Nicholas Bourbaki published a series of books on modern advanced mathematics in the 1930s.

Q: What are injection and bijection in mathematics?


A: Injection and bijection are related terms to surjection in mathematics. An injection function ensures that no two elements in the domain map to the same element in the codomain. A bijection function is both surjective and injective.

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