2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/58505Talk given at Harvard, January 1999, published in the Proceedings of the Harvard Winter School on mirror symmetry, vector bundles and lagrangian cycles, 1999, International Press. Surveys the joint work [ST, KS] with Paul Seidel and Mikhail Khovanov.15 pages, 4 figuresAlgebraic GeometryHigh Energy Physics - Theory14J32; 18E30Mirror symmetry and actions of braid groups on derived categoriestext