nLab
ribbon category

Definition

A ribbon category (also called a tortile category) is a braided pivotal category, or equivalently a balanced autonomous category, which satisfies θ *=θ\theta^* = \theta, where θ\theta is the twist. This is a kind of category with duals.

Revised on December 3, 2014 12:58:22 by Anonymous Coward (193.49.225.10)