Single-particle bases for conserved D $_{\mbox{\rm\scriptsize {2h}}}^{\mbox{\rm\scriptsize {TD}}}$ operators

We may now separately consider several cases corresponding to different subgroups of conserved D $_{\mbox{\rm\scriptsize {2h}}}^{\mbox{\rm\scriptsize {TD}}}$ operators, Table 1, and to the four different categories of operators (linear or antilinear, and hermitian or antihermitian). In subsections 3.1.1-3.1.4, we consider cases of various D $_{\mbox{\rm\scriptsize {2h}}}^{\mbox{\rm\scriptsize {TD}}}$ generators being separately conserved, and in subsections 3.1.5-3.1.8, cases of pairs of generators being simultaneously conserved. Three-generator subgroups are briefly discussed in Sec. 3.1.9.