Did anything further come out of the ideas at holographic principle of higher category theory?
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Sounds interesting
]]>We would like to mention that a structure similar to categorical symmetry was found previously in AdS/CFT correspondence, [63–65] where a global symmetry at the high-energy boundary is related to a gauge theory of group in the low-energy bulk. In this paper, we stress that the categorical symmetry encoded by the bulk -gauge theory not only contains the symmetry at the boundary, it also contains a dual algebraic higher symmetry at the boundary.