linear subspace
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subset of a vector space that forms a vector space itself
~25 min read
Encyclopedic overview
In mathematics, and more specifically in linear algebra, a linear subspace or vector subspace is a vector space that is a subset of some larger vector space. A linear subspace is usually simply called a subspace when the context serves to distinguish it from other types of subspaces.
Definition
Excerpted from Wikipedia’s “linear subspace” article, available under the CC BY-SA 4.0 licence.