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math.AT2017
Model topoi and motivic homotopy theory
Georgios Raptis, Florian Strunk
Given a small simplicial category $\C$ whose underlying ordinary category is equipped with a Grothendieck topology , we construct a model structure on the category of simplicial…
math.AT2017★ 1 cited
Small presentations of model categories and Vopěnka's principle
G. Raptis, J. Rosický
We prove existence results for small presentations of model categories generalizing a theorem of D. Dugger from combinatorial model categories to more general model categories. Som…
math.AT2014
The realization space of an unstable coalgebra
Georg Biedermann, Georgios Raptis, Manfred Stelzer
Unstable coalgebras over the Steenrod algebra form a natural target category for singular homology with prime field coefficients. The realization problem asks whether an unstable c…