= Non-invertible symmetry
{wiki=Non-invertible_symmetry}
Non-invertible symmetry refers to a type of symmetry in physical systems where certain transformations cannot be undone or reversed. In contrast to invertible symmetries, which have a clear operation that can be applied to return a system to its original state, non-invertible symmetries do not allow for such a straightforward correspondence. This concept often arises in the context of condensed matter physics and quantum field theory.
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