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Results tagged with gr.group-theory
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user 521742
Questions about the branch of algebra that deals with groups.
7
votes
The congruence subgroup property for mapping class groups and a conjecture of Grothendieck
Let $K$ be a field of characteristic zero, $X/K$ a hyperbolic $(g,n)$-curve. There is a famous short exact sequence
$$1\longrightarrow\pi_1(X\otimes \overline{K})\longrightarrow\pi_1(X)\longrightarrow …
- 607