Topological quantum numbers are integer values that arise in the context of topological phases of matter and quantum field theories, particularly in condensed matter physics. They characterize different phases of a system based on their global properties rather than local properties, which can be crucial for understanding phenomena that are stable against local perturbations. A few key points about topological quantum numbers are: 1. **Robustness**: Topological quantum numbers are robust against small perturbations or changes in the system.
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