Twisted Morita-Mumford classes on braid groups

Details Twisted Morita-Mumford classes on braid groups Twisted Morita-Mumford classes on braid groups

2006-06-05

arxiv.org/abs/math/0606102v2

Geom. Topol. Monogr. 13 (2008) 293-306

Mathematics

Geometric Topology

This is the version published by Geometry & Topology Monographs on 25 February 2008

Scientific paper

10.2140/gtm.2008.13.293

Evaluating the twisted Morita-Mumford classes bar(h)_p on the Artin braid
group B_n, we give the stable algebraic independence of the bar(h)_p's on the
automorphism group of the free group, Aut(F_n). This is sharper than the
results we obtained by restricting them to the mapping class group.

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