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A symmetric 3-group is the following equivalent structure
A 3-group whose E1-algebra structure is equipped with a lift to to an E4-algebra structure.
A 3-group which regarded as an ∞-group is equipped with the structure of an abelian ∞-group.
A 3-group such that the delooping $\mathbf{B}G$ is equipped with the structure of a braided 4-group?.
A symmetric monoidal 2-category all whose objects are invertible under the tensor product.
Last revised on November 1, 2012 at 18:15:30. See the history of this page for a list of all contributions to it.