On the minimum dilatation of braids on punctured discs
Erwan LanneauJean-Luc Thiffeault
所有作者
Erwan LanneauJean-Luc Thiffeault
文献摘要
We find the minimum dilatation of pseudo-Anosov braids on n-punctured discs
for 3 <= n <= 8. This covers the results of Song-Ko-Los (n=4) and Ham-Song
(n=5). The proof is elementary, and uses the Lefschetz formula.