Displaying similar documents to “On ℤ/2ℤ-extensions of pointed fusion categories”

A categorification of the square root of -1

Yin Tian (2016)

Fundamenta Mathematicae

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We give a graphical calculus for a monoidal DG category ℐ whose Grothendieck group is isomorphic to the ring ℤ[√(-1)]. We construct a categorical action of ℐ which lifts the action of ℤ[√(-1)] on ℤ².

Reedy categories which encode the notion of category actions

Julia E. Bergner, Philip Hackney (2015)

Fundamenta Mathematicae

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We study a certain type of action of categories on categories and on operads. Using the structure of the categories Δ and Ω governing category and operad structures, respectively, we define categories which instead encode the structure of a category acting on a category, or a category acting on an operad. We prove that the former has the structure of an elegant Reedy category, whereas the latter has the structure of a generalized Reedy category. In particular, this approach gives a new...

Moore categories.

Rodelo, Diana (2004)

Theory and Applications of Categories [electronic only]

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Enlargements of categories.

Brünjes, Lars, Serpé, Christian (2005)

Theory and Applications of Categories [electronic only]

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