👉 In mathematics, "unperturbedness" refers to a property that an object or system does not change in response to external perturbations, such as changes in temperature, pressure, or other physical parameters. This means that the properties of the system remain unchanged after any disturbances are introduced. An unperturbed system is one where the effects of external forces and changes in the system's state are negligible compared to the overall effect on the system. For example, a pendulum would be considered unp