Lecture

Linear Algebra: Surjection and Image

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Description

This lecture covers the concept of surjection in linear algebra, focusing on the image of a function. It explains how to determine if a function is surjective and provides examples to illustrate the concept. The lecture also discusses the existence of antecedents and the equivalence between surjection and image. Various exercises are presented to demonstrate the application of these concepts.

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Related concepts (32)

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Equivalence relation

In mathematics, an equivalence relation is a binary relation that is reflexive, symmetric and transitive. The equipollence relation between line segments in geometry is a common example of an equivalence relation. Each equivalence relation provides a partition of the underlying set into disjoint equivalence classes. Two elements of the given set are equivalent to each other if and only if they belong to the same equivalence class.

Equivalence class

In mathematics, when the elements of some set have a notion of equivalence (formalized as an equivalence relation), then one may naturally split the set into equivalence classes. These equivalence classes are constructed so that elements and belong to the same equivalence class if, and only if, they are equivalent. Formally, given a set and an equivalence relation on the of an element in denoted by is the set of elements which are equivalent to It may be proven, from the defining properties of equivalence relations, that the equivalence classes form a partition of This partition—the set of equivalence classes—is sometimes called the quotient set or the quotient space of by and is denoted by .

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