7 citations · 9 across the 4 of their papers we have counts for
8 papers
Measurable Categories
D. N. Yetter
We develop the theory of categories of measurable fields of Hilbert spaces and bounded fields of bounded operators. We examine classes of functors and natural transformations with…
Measurable Categories and 2-Groups
L. Crane, D. N. Yetter
Using the theory of measurable categories developped by Yetter in work in preparation, we provide a notion of representations of 2-groups more well-suited to physically and geometr…
A More Sensitive Lorentzian State Sum
Louis Crane, David Yetter
We give the construction modulo normalization of a new state sum model for lorentzian quantum general relativity, using the construction of Dirac's expansors to include quantum ope…
Quandles and Monodromy
D. N. Yetter
We show that a variety of monodromy phenomena arising in geometric topology and algebraic geometry are most conveniently described in terms of quandle homomorphisms from a knot qua…
Quandles and Lefschetz Fibrations
D. N. Yetter
We show that isotopy classes of simple closed curves in any oriented surface admit a quandle structure with operations induced by Dehn twists, the Dehn quandle of the surface. We f…
Abelian Categories of Modules over a (Lax) Monoidal Functor
David N. Yetter
The analogy between Yetter's deformation theory form (lax) monoidal functors and Gerstenahaber's deformation theory for associative algebras is solidified by shown that under reaso…