Sesquilinear Form: Complex Vector Space, Linear Operator, Antilinear

One Form: Linear Algebra, Vector Space, Functional

Operator Norm: Mathematics, Linear Operator, Norm, Bounded Normed Vector Space, Field

Rotation Operator (Vector Space): Euler Angles, Linear Algebra, Operator, Orthogonal Matrix, Determinant

Quotient Space (linear algebra): Linear Algebra, Vector