activity
20092026
most citedThe space of metrics of positive scalar curvature

27 citations · 117 across the 23 of their papers we have counts for

collaborators

26 papers

math.CT2026

The span-squares adjunction

George Raptis, Wolfgang Steimle

We show a universal property of the span -category that yields a description of functors defined on this category. For this, we view the span construction as a functor from…

math.KT2022

The localisation theorem for the -theory of stable -categories

Fabian Hebestreit, Andrea Lachmann, Wolfgang Steimle

We provide a fairly self-contained account of the localisation and cofinality theorems for the algebraic -theory of stable -categories. It is based on a general…

math.KT2021★ 4 cited

Stable moduli spaces of hermitian forms

Fabian Hebestreit, Wolfgang Steimle

We prove that Grothendieck-Witt spaces of Poincaré categories are, in many cases, group completions of certain moduli spaces of hermitian forms. This, in particular, identifies Kar…

math.GT2020★ 3 cited

The derivative map for diffeomorphism of disks: An example

Diarmuid Crowley, Thomas Schick, Wolfgang Steimle

We prove that the derivative map , defined by taking the derivative of a diffeomorphism, can induce a nontrivial map on homotopy g…

math.KT2020

Hermitian K-theory for stable -categories III: Grothendieck-Witt groups of rings

Baptiste Calmès, Emanuele Dotto, Yonatan Harpaz +6

We establish a fibre sequence relating the classical Grothendieck-Witt theory of a ring to the homotopy -orbits of its K-theory and Ranicki's original (non-period…

math.KT2020★ 7 cited

Hermitian K-theory for stable -categories II: Cobordism categories and additivity

Baptiste Calmès, Emanuele Dotto, Yonatan Harpaz +6

We define Grothendieck-Witt spectra in the setting of Poincaré -categories and show that they fit into an extension with a K- and an L-theoretic part. As consequences we de…