Linked from
The 14 pages that link to Image (mathematics), each with the reason it gives.
FunctionRelated: The image can be smaller than the codomain.
Function compositionRelated: The inner function’s image must fit within the outer function’s domain.
Linear operatorRelated: The operator's image records which vectors in the codomain it can reach.
Surjective functionRelated: A function is surjective precisely when this set equals its codomain.
Exact sequenceRelated: It is compared with the next map's kernel at every position in the sequence.
CokernelRelated: The cokernel divides the codomain by precisely this subobject.
Chain complexRelated: Boundaries in a degree are the image of the boundary map from the next degree.
Five lemmaRelated: The equality of an image and the next kernel is the row condition the lemma uses.