Fig. 8. Schematic braiding process in the vicinity of Γ with broken C₆ symmetry.

The braiding processes lead to the transfer of charge (frame charge −1, equivalently Euler class 1) from gap Δ₁₁ (red triangles) to gap Δ₁₀ (blue circles). The successive panels a–e correspond to the braiding of Fig. 7b with ε < t < 1 − ε. The panels b–d have the same positions of nodes, while the Dirac strings are moved around and the charges are flipped accordingly.