Bayeh, Marzieh
Hess, Kathryn
Karpova, Varvara
Kedziorek, Magdalena
Riehl, Emily
Shipley, Brooke
Left-induced model structures and diagram categories
Contemporary Mathematics
Contemporary Mathematics
Contemporary Mathematics
Contemporary Mathematics
641
Model category
weak factorization system
fibrant generation
Postnikov presentation
injective model structure
2015
2015
We prove existence results à la Jeff Smith for left-induced model category structures, of which the injective model structure on a diagram category is an important example. We further develop the notions of fibrant generation and Postnikov presentation from work of the second author, which are dual to a weak form of cofibrant generation and cellular presentation. As examples, for k a field and H a differential graded Hopf algebra over k, we produce a left-induced model structure on augmented H-comodule algebras and show that the category of bounded below chain complexes of finite-dimensional k-vector spaces has a Postnikov presentation. To conclude, we investigate the fibrant generation of (generalized) Reedy categories. In passing, we also consider cofibrant generation, cellular presentation, and the small object argument for Reedy diagrams.
Contemporary Mathematics
Journal Articles
10.1090/conm/641/12859