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Showing 1 to 1 of 1 for “"symmetric separating curve complex"”.
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Subgroups of the Torelli group
… homomorphism. <BR> <BR> Then we will look at the symmetric Torelli group, SI(Sg). More specifically, we will investigate the group generated by Dehn twists about symmetric separating curves denoted H(Sg). We will show the well-known Birman-Craggs-Johnson homomorphism is not able to distinguish …