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The First Homology of the Mapping Class Groups of
Non-orientable Surfaces
by
Mustafa Korkmaz
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In this work, we compute the first homology groups of the mapping class groups of connected closed non-orientable surfaces. It turns out that they are isomorphic to Z2 if the genus of the surface is at least seven. We conclude that the group of isometries of a vector space over Z2 with the Euclidean symmetric bilinear form is perfect.