Notes on universal algebra
arXiv:math/0111009
Abstract
These are notes of a mini-course given at Dennisfest in June 2001. The goal of these notes is to give a self-contained survey of deformation quantization, operad theory, and graph homology. Some new results related to "String Topology" and cacti are announced in Section 2.7.
22 pages, 10 figures; In the revised version, a few minor errors are corrected, including some signs for the A_infty operad and algebras