Wedge Reversion antisymmetry was introduced as a means to classify all physical quantities in arbitrary dimensions. The above image shows that an object that is chiral in N dimensions is no longer chiral in N+1 dimensions, and hence chirality is not a good metric to classify physical quantities. Instead a new operation, Wedge reversion allows for such classification in arbitrary dimensions. A recent article led by Hari and Jason in the Annual Reviews of Materials Research reviews this and other important antisymmetries and their applications. Gopalan gave a zoom seminar at the Pittsburg Quantum Institute (PQI) on Sept 18, 2020 on this topic. The video recording of the talk is on Youtube at this link.