Atomic domains Atoms 6 Chemical bonds 4 Density matrix 4 Eigenvalues and eigenfunctions 4 Electron system 4 Electrons 4 Matrix algebra 4 Molecular dynamics 4 Molecules 4 Reliability 4 Spatial decomposition 4 Atomic groups 2 Atomic physics 2 Consistent 2 Density matrixes 2 Electronic densities 2 Electronic energies 2 Extending 2 First-order 2 Functional groups 2 Mathematical frameworks 2 Molecular electronics 2 Molecular fragments 2 Numerical determinations 2 Organic compounds 2 Physical spaces 2