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Jul 18, 2020 at 11:57 answer added ChrisWensley timeline score: 3
Jul 16, 2020 at 13:24 comment added Student @RonnieBrown It's very helpful. With both groups fixed, up to quasi-isomorphism the structure only depends on the Postnikov invariant. How about "up to isomorphism"? In section 3 the author implemented an algorithm, which seems to be brute forcing all possibilities.. To summarize.. is there a more conceptual way to classify finite Cat1Group/CrossedModules structures up to isomorphism?
Jul 16, 2020 at 10:13 comment added Ronnie Brown You could look at HOMOTOPY 2-TYPES OF LOW ORDER GRAHAM ELLIS AND LE VAN LUYEN in the J Experimental Math,
Jul 15, 2020 at 20:45 history asked Student CC BY-SA 4.0