The Euler characteristic of the Whitehead automorphism group of a free product
Group Theory
2007-05-23 v1 Combinatorics
Abstract
A combinatorial summation identity over the lattice of labelled hypertrees is established that allows one to gain concrete information on the Euler characteristics of various automorphism groups of free products of groups.
Keywords
Cite
@article{arxiv.math/0601694,
title = {The Euler characteristic of the Whitehead automorphism group of a free product},
author = {Craig Jensen and Jon McCammond and John Meier},
journal= {arXiv preprint arXiv:math/0601694},
year = {2007}
}
Comments
19 pages, 3 figures, to appear in Trans. Amer. Math. Soc