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This talk will survey various algebraic completions of
discrete and profinite groups. Motivation from topology and
algebraic/arithmetic geometry will be given for studying these
completions. Examples from Galois theory and geometric topology (braid
groups, mapping class groups, Torelli groups) will be given.
After the seminar we will take the speaker to lunch. See the Algebra Seminar web page for information about other seminars in the series. Anthony Henderson [email protected]. |
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