Recent and upcoming talks by Nick Ramsey

Nick Ramsey: Definability in the absolute Galois group of a PAC field

HUJI Logic Seminar The next meeting of the Logic Seminar will be in 15/05, 14:00 – 16:00 in Sprinzak Building, Room 101.  Please note the change in time and place. Definability in the absolute Galois group of a PAC field Speaker: Nick Ramsey Abstract:  A field K is called pseudo-algebraically closed (PAC), if every absolutely irreducible variety defined over K has a K-rational point.  continue reading…

Set theoretic & Topological methods in Model Theory, Tezpur, September 7–12, 2017

The aim of this programme is to bring together mathematicians and logicians working on/interested in various topics on the border of model theory, topology and set theory. The leading themes are topological dynamics and descriptive set theoretic methods in model theory. continue reading…

Nicholas Ramsey: NSOP_1 Theories

BGU seminar in Logic, Set Theory and Topology. Time: Tuesday, April 25th, 12:15-13:30. Place: Seminar room -101, Math building 58. Speaker: Nicholas Ramsey (UC Berkeley) Title: NSOP_1 Theories Abstract: The class of NSOP_1 theories was isolated by Džamonja and Shelah in the mid-90s and later investigated by Shelah and Usvyatsov, but the theorems about this class were mainly restricted to its syntactic properties and the model-theoretic general consensus was that the property SOP_1 was more of an unimportant curiosity than a meaningful dividing line. continue reading…