The Homotopy Calculus of Categories and Graphs

• Main Author: Vicinsky, Deborah
• Other Authors: Sadofsky, Hal
• Language: en_US
• Published: University of Oregon 2015
• Subjects: Algebraic topology; Goodwillie calculus; Homotopy theory; Model categories
• Online Access: http://hdl.handle.net/1794/19283

We construct categories of spectra for two model categories. The first is the category of small categories with the canonical model structure, and the second is the category of directed graphs with the Bisson-Tsemo model structure. In both cases, the category of spectra is homotopically trivial. This implies that the Goodwillie derivatives of the identity functor in each category, if they exist, are weakly equivalent to the zero spectrum. Finally, we give an infinite family of model structures on the category of small categories.