Let ϕ:G→GL(V)\phi:G\to GL(V)ϕ:G→GL(V) be a representation of the group GGG. A sub-representation is a representation ψ:G→GL(W)\psi:G\to GL(W)ψ:G→GL(W) for WWW a subspace of VVV.
Wikidata ID: Q55648664