3 papers
math.DG2008
Differentiable Categories, gerbes and G-structures
Tsemo Aristide
The theories of strings and -branes have motivated the development of non Abelian cohomology techniques in differential geometry, on the purpose to find a geometric interpretati…
math.CO2008
A homotopical algebra of graphs related to zeta series
Terrence Bisson, Aristide Tsemo
The purpose of this paper is to develop a homotopical algebra for graphs, relevant to zeta series and spectra of finite graphs. More precisely, we define a Quillen model structure…
math.AG2007
Extended powers and Steenrod operations in algebraic geometry
Terrence P. Bisson, Aristide Tsemo
Steenrod operations have been defined by Voedvodsky in motivic cohomology in order to show the Milnor and Bloch-Kato conjectures. These operations have also been constructed by Bro…