33 citations · 143 across the 27 of their papers we have counts for
6 papers · 1 filter
Infinite Loop Spaces and Group Actions on Strongly Self-Absorbing C*-Algebras
Ulrich Pennig, George Tridimas
Lifting obstructions for group actions, cocycle actions, and -kernels admit a cohomological description via topological crossed modules, as recently developed by Izumi, Giron-Pa…
Computing Connection Matrices of Conley Complexes via Algebraic Morse Theory
Álvaro Torras-Casas, Ka Man Yim, Ulrich Pennig
Given a poset-graded chain complex of vector spaces, a Conley complex is the minimal chain-homotopic reduction of the initial complex that respects the poset grading. A connection…
Units of -equivariant -theory and bundles of UHF-algebras
Valerio Bianchi, Ulrich Pennig
We consider infinite tensor product actions of a finite cyclic group on the UHF-algebra for a finite-dimensional projectively faithful unit…
Interleaving Mayer-Vietoris spectral sequences
Álvaro Torras, Ulrich Pennig
We discuss the Mayer-Vietoris spectral sequence as an invariant in the context of persistent homology. In particular, we introduce the notion of -acyclic carriers and…
Exponential Functors, R-Matrices and Twists
Ulrich Pennig
In this paper we show that each polynomial exponential functor on complex finite-dimensional inner product spaces is defined up to equivalence of monoidal functors by an involutive…
Unit spectra of K-theory from strongly self-absorbing C*-algebras
Marius Dadarlat, Ulrich Pennig
We give an operator algebraic model for the first group of the unit spectrum of complex topological K-theory, i.e. , by bundles of stabilized infinite Cu…