CTs and applications
Geometry of mapping class groups and Out(Fn) October 25, 2016 - October 28, 2016
Location: MSRI: Simons Auditorium
Out(Fn)
Train Tracks
CT
20E36 - Automorphisms of infinite groups [For automorphisms of finite groups, see 20D45]
20F65 - Geometric group theory [See also 05C25, 20E08, 57Mxx]
57-XX - Manifolds and cell complexes {For complex manifolds, see 32Qxx}
14628
Relative train tracks, introduced by Bestvina-Handel, are convenient representatives of free group outer automorphisms. They serve as analogues of Thurston’s normal form for surface mapping classes. I will describe joint work with Michael Handel using particularly nice relative train tracks called completely split relative train tracks, or CTs for short, to compute some invariants of free group automorphisms.
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14628
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