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UID:20260902T083355EDT-07839r5eEs@132.216.98.100
DTSTAMP:20260902T123355Z
DESCRIPTION:Title: Virtually unipotent elements of 3-manifold groups.\n\nAb
 stract: Suppose a group G contains an infinite-order element g such that e
 very finite-dimensional linear representation of G maps some nontrivial po
 wer of g to a unipotent matrix. Since unitary matrices are diagonalizable\
 , and since a unipotent matrix is torsion if its entries lie in a field of
  positive characteristic\, such a group G does not admit a faithful finite
 -dimensional unitary representation\, nor is G linear over a field of posi
 tive characteristic. We discuss manifestations of the above phenomenon in 
 various finitely generated groups\, with an emphasis on 3-manifold groups.
 \n\nLink: https://mcgill.zoom.us/j/98910726246?pwd=VHlzTzdTZGtqcHVuWGNKdys
 4d0FzQT09\n\nZoom ID: 989 1072 6246\n	Password: delta\n
DTSTART:20210317T190000Z
DTEND:20210317T200000Z
SUMMARY:Sami Douba (McGill University)
URL:https://www.mcgill.ca/mathstat/channels/event/sami-douba-mcgill-univers
 ity-329613
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