|||
The strong topological index:
(−1)ν0 =σΓ×σM1×σM2×σM3×σL1×σL2×σL3×σA
The other three weak topological indices (νk, k = 1, 2, 3):
(−1)ν1=σM1×σM2×σL1×σL2
(−1)ν2=σM2×σM3×σL2×σL3
(−1)ν3=σL1×σL2×σL3×σA
WCC’s
ν0 = [(z0+z1) mod 2] = [(x0+x1) mod 2] = [(y0+y1) mod 2]
ν1 = x1; ν2 = y1; ν3 = z1
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