2009/04/03 by Roman Mikhailov, Inder Bir S. Passi, Mikhailov, Roman +1
Mathematics · #Homotopy and Cohomology in Algebraic Topology #Geometric and Algebraic Topology #Algebraic structures and combinatorial models
paper · pdf · doi:10.48550/arxiv.0904.0634
We consider limits over categories of extensions and show how certain well-known functors on the category of groups turn out as such limits. We also discuss higher (or derived) limits over categories of extensions.