Grassmannia: nMathematics, Linear Subspace, Vector Space, Dimension

Dimension (vector space): Mathematics, Cardinal Number, Vector Space, Basis (linear algebra)

Codimension: Mathematics, Subspace, Vector Space, Submanifold

Orthogonalization: Linear Algebra, Orthogonal Vector, Span (Linear Algebra), Subspace, Linearly Independent

Row Space: Linear Algebra, Matrix (Mathematics), Combination, Euclidean Subspace, Space