10 citations · 10 across the 10 of their papers we have counts for
12 papers
Weak Factorization and Product Systems Over Groupoids
Jon Bannon, Alina Vdovina
We give a product-system description of generalized higher-rank graphs with the weak factorization property. For such a graph with degree-zero groupoid G, we prove that weak factor…
The prime spectrum of rings of integer-coefficient power series on the disk
Jon Bannon, David Feldman
This is a sequel to \cite{PaperI}, where it is shown that a discrete effective divisor on the open unit disk $\D$ is the zero divisor of a holomorphic function with integer Taylor…
Rigidity of symmetric holomorphic functions on infinite-dimensional sequence spaces
David Feldman, Jon Bannon
We study holomorphic functions on permutation-invariant subsets of an infinite-dimensional sequence space that are invariant under all finite permutations of coordinates. Working o…
Non-isomorphism of rings of integer-coefficient holomorphic functions on disks of varying radius
Jon Bannon, David Feldman
For , let denote the ring of power series with integer Taylor coefficients converging on the open disk . We prove that t…
Integer Coefficient Power Series with Prescribed Zero Sets
Jon Bannon, David Feldman
We prove that a discrete effective divisor on the open unit disk is the zero divisor of a holomorphic function on with integer Taylor coefficients if and…
Quasinormalizers in crossed products of von Neumann algebras
Jon Bannon, Jan Cameron, Ionut Chifan +3
We study the relationship between the dynamics of the action of a discrete group on a von Neumann algebra , and structural properties of the associated crossed product i…
The Modular Symmetry of Markov Maps
Jon Bannon, Jan Cameron, Kunal Mukherjee
A state-preserving automorphism of a von Neumann algebra induces a canonical unitary operator on the GNS Hilbert space of the state which fixes the vacuum. This unitary commutes wi…
Noncommutative Joinings II
Jon Bannon, Jan Cameron, Kunal Mukherjee
This paper is a continuation of the authors' previous work on noncommutative joinings, and contains a study of relative independence of W-dynamical systems. We prove that, give…
On Noncommutative Joinings
Jon Bannon, Jan Cameron, Kunal Mukherjee
This paper extends the classical theory of joinings of measurable dynamical systems to the noncommutative setting from several interconnected points of view. Among these is a parti…
Full factors and co-amenable inclusions
Jon Bannon, Amine Marrakchi, Narutaka Ozawa
We show that if is a full factor and is a co-amenable subfactor with expectation, then is also full. This answers a question of Popa from 1986. We also genera…
Haagerup's Approximation Property and Relative Amenability
Jon P. Bannon, Junsheng Fang
A finite von Neumann algebra with a faithful normal trace has Haagerup's approximation property (relative to a von Neumann subalgebra ) if there ex…
A Folner Invariant for Type II_1 Factors
Jon P. Bannon, Mohan Ravichandran
In this article we introduce an isomorphism invariant for type II_1 factors using the Connes-Folner condition. We compute bounds of this number for free group factors.