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math.QA2020
Reciprocity of the Wigner derivative for spherical tetrahedra
Bruce Bartlett, V. Hosana Ranaivomanana
The Wigner derivative is the partial derivative of dihedral angle with respect to opposite edge length in a tetrahedron, all other edge lengths remaining fixed. We compute the inve…
math.QA2020
Extended TQFTs via Generators and Relations I: The Extended Toric Code
Bruce Bartlett, Gerrit Goosen
In his PhD thesis, Goosen combined the string-net and the generators-and-relations formalisms for arbitrary once-extended 3-dimensional TQFTs. In this paper we work this out in det…