A small generating set for the twist subgroup of the mapping class group of a non-orientable surface by Dehn twists
arXiv:1611.00465
Abstract
We give a small generating set for the twist subgroup of the mapping class group of a non-orientable surface by Dehn twists. The difference between the number of the generators and a lower bound of numbers of generators for the twist subgroup by Dehn twists is one. The lower bounds is obtained from an argument of Hirose [5].
5 pages, 4 figures