The framed discs operad is cyclic
arXiv:math/0607490
Abstract
The operad of framed little discs is shown to be equivalent to a cyclic operad. This answers a conjecture of Salvatore in the affirmative, posed at the workshop `Knots and Operads in Roma,' at Universita di Roma ``La Sapienza'' in July of 2006.
5 pages, 1 figure. v2: typos corrected, references added.