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

Operator Algebra: Functional Analysis, Algebra Over a Field, Continuous Function, Linear Operator,...

Kernel (matrix): linear algebra, Matrix (mathematics), Set Euclidean subspace, space, (linear operator),...

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

Sesquilinear Form: Complex Vector Space, Linear Operator, Antilinear