SEARCH Articles Figures Tables Elementary Operations and Properties of Matrices Linear Operators and Transformation Matrices Matrices and Matrix Operations Matrix and Spin Operators Matrix operations Operational matrix Operator matrix Operators and matrix elements in second-quantization representation Relativistic Breit operator and its matrix elements Review of scalar, vector, and matrix operations Selected Topics in Matrix Operations and Numerical Methods for Solving Multivariable 15- 1 Storage of Large Sparse Matrices Some formulae and rules of operation on matrices Unitary matrix expansions of creation and annihilation operators