科研之友
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摘要
Let S be a connected, compact and orientable surface of genus two having exactly one boundary component. We describe any automorphism of the Torelli complex of S, and describe any automorphism of the Torelli group of S. More generally, we study superinjective maps from the Torelli complex of S into itself, and show that any finite index subgroup of the Torelli group of S is co-Hopfian.
- 出版日期2014-12
