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Concept
Cokernel
In mathematics, the
cokernel of a linear map
between vector spaces is the
quotient of the codomain
by the
image of the map
, capturing the
failure of the map to be surjective
. It is a
fundamental concept in homological algebra
and is used to understand the
structure of modules
and
abelian groups
in terms of
exact sequences
.
Relevant Degrees
Algebra 100%
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