Induced Representation Method in the Theory of Electron Structure and Superconductivity

Table 4

Spatial parts of pairs in point , space group P4/nmm.

	Small IRs [26]	Possible pair symmetry
Singlet pairs	,
	,
Triplet pairs	,
	,

() Note that and central extension of coincide. IRs of are projective and are denoted according to [26].