An onto function is a function whose image is equal to its codomain. Also, the range and codomain of an onto function are equal. We can also say that function is onto when every y ∈ …

In mathematics, a surjective function (also known as surjection, or onto function / ˈɒn.tuː /) is a function f such that, for every element y of the function's codomain, there exists at least one …

Nov 11, 2025 · In simple words, for any function, if all the elements of the codomain are mapped from some element of the domain, then the function is said to be an onto function.

An onto function (surjective function) is a function where each element in the co-domain has a preimage. Learn the definition, properties, examples, and more.

Dec 16, 2024 · In this method, we check for each and every element manually if it has unique image. Check whether the following are onto? Since all elements of set B has a pre-image in …

What Is Onto Function? An onto function (or surjective function) is a type of mapping from set A (domain) to set B (codomain) in which every element in set B is the image of at least one …

Dec 10, 2025 · An onto function is a type of mapping where each element in the codomain set has a corresponding element in the domain set. In this article, we will discuss onto functions, …