Table 1 Z2 numbers (1; 000) of Co3Sn2S2 crystal.

The product of parity of occupied bands at each time reversal invariant momenta (TRIM) points.

TRIM points𝚪 (0,0,0)L (0.5,0,0) × 3F (0.5,0.5,0) × 3T (0.5,0.5,0.5)
Parity+