The unstable integral homology of the mapping class groups of a surface with boundary |
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Authors: | Véronique Godin |
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Institution: | (1) Department of Mathematics, Harvard University, Cambridge, MA 02138, USA |
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Abstract: | We construct a graph complex calculating the integral homology of the bordered mapping class groups. We compute the homology of the bordered mapping class groups of the surfaces S
1,1, S
1,2 and S
2,1. Using the circle action on this graph complex, we build a double complex and a spectral sequence converging to the homology of the unbordered mapping class groups. We compute the homology of the punctured mapping class groups associated to the surfaces S
1,1 and S
2,1. Finally, we use Miller’s operad to get the first Kudo–Araki and Browder operations on our graph complex. We also consider an unstable version of the higher Kudo–Araki–Dyer–Lashoff operations. |
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Keywords: | |
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