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Eigil Fjeldgren Rischel · Oct 11, 2020

The homotopy theory of groups

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Context: Krause and Nikolaus: Group Theory for Homotopy Theorists (pdf). Krause and Nikolaus develop group theory using model categories (well, one model category). This is obviously a joke, but I think it is a very useful pedagogical joke. So I’m going to go through it and try to explain what’s happening. Group presentations If you’ve taken a course on group theory, you’ve…

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