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- W2949794100 abstract "There is a series of cycles in the rational homology of the groups Out(F_n), first discovered by S. Morita, which have an elementary description in terms of finite graphs. The first two of these give nontrivial homology classes, and it is conjectured that they are all nontrivial. These cycles have natural lifts to the homology of Aut(F_n), which is stably trivial by a recent result of Galatius. We show that in fact a single application of the stabilization map from Aut(F_n) to Aut(F_(n+1)) kills the Morita classes, so that they disappear immediately after they appear." @default.
- W2949794100 created "2019-06-27" @default.
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- W2949794100 date "2006-06-20" @default.
- W2949794100 modified "2023-09-27" @default.
- W2949794100 title "Morita classes in the homology of Aut(F_n) vanish after one stabilization" @default.
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