11 citations · 18 across the 3 of their papers we have counts for
4 papers
Descent via Tannaka duality
Daniel Schäppi
Given a diagram of schemes, we can ask if a geometric object over one of them can be built from descent data (usually objects of the same type over the various other schemes in the…
Constructing colimits by gluing vector bundles
Daniel Schäppi
As already observed by Gabriel, coherent sheaves on schemes obtained by gluing affine open subsets can be described by a simple gluing construction. An example due to Ferrand shows…
Tannaka duality for comonoids in cosmoi
Daniel Schäppi
A classical result of Tannaka duality is the fact that a coalgebra over a field can be reconstructed from its category of finite dimensional representations by using the forgetful…
Singular (Lipschitz) homology and homology of integral currents
Christian Riedweg, Daniel Schäppi
We compare the homology groups of the chain complex of integral currents with compact support of a metric space with the singular Lipschitz homology …