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A crossed module representation of a $2$-group constructed from the $3$-loop group $\Omega^3 G$. (arXiv:2311.04995v1 [math-ph]) http://arxiv.org/abs/2311.04995
A crossed module representation of a $2$-group constructed from the $3$-loop group $\Omega^3 G$. (arXiv:2311.04995v1 [math-ph]) http://arxiv.org/abs/2311.04995