arXiv Analytics

Sign in

arXiv:math/0702273 [math.GR]AbstractReferencesReviewsResources

Quasi-homomorphisms on mapping class groups

Mladen Bestvina, Koji Fujiwara

Published 2007-02-09Version 1

We refine the construction of quasi-homomorphisms on mapping class groups. It is useful to know that there are unbounded quasi-homomorphisms which are bounded when restricted to particular subgroups since then one deduces that the mapping class group is not boundedly generated by these subgroups. In this note we enlarge the class of such subgroups. The generalization is motivated by considerations in first order theory of free groups.

Categories: math.GR, math.GT
Related articles: Most relevant | Search more
arXiv:math/0703703 [math.GR] (Published 2007-03-23)
Residual $p$ properties of mapping class groups and surface groups
arXiv:math/0412128 [math.GR] (Published 2004-12-07, updated 2005-09-19)
Currents on free groups
arXiv:math/0506518 [math.GR] (Published 2005-06-24)
Diagram rigidity for geometric amalgamations of free groups

Links

Toolbox