Piotr Pragacz Title: Order of tangency between manifolds Abstract: We study the order of tangency between two manifolds of same dimension and give that notion three quite different geometric interpretations. Related aspects of the order of tangency are also discussed. This is a joint work with Wojciech Domitrz and Piotr Mormul. This lecture will be repeated at the Seminar of Analytic Geometry of Jagiellonian University in Krakow on Monday 23 April 2018.