Скачать или смотреть Anthony Licata - Geometric group theory and spherical twists

Workshop on "Categorification in quantum topology and beyond" at the Erwin Schrödinger International Institute for Mathematics and Physics on January 7-18, 2019.
Categorification is a flexible and powerful set of techniques and ideas, which produces insight about mathematical structures by viewing them as shadows of objects in a richer world, often described in terms of higher categories. Two important and interrelated categorification programmes, which are the basis for this workshop, concern the concepts of quantum link homologies and higher representation theory. Both have their origin in mathematics, but have since developed into some of the most fruitful grounds for collaboration between pure mathematics and theoretical physics.