March 05-18, 2017 David Cushing and Norbert Peyerimhoff from Durham University visit and talk in 3-10国家数学与交叉科学中心合肥分中心报告 and 3-8国家数学与交叉科学中心合肥分中心报告 with titles "Bakry-\'Emery curvature functions of graphs" and "Sectional curvature of polygonal complexes with planar substructures".
December 29-30, 2016 Peter L. Guo (郭龙) from Nankai University (南开大学) visits and talks in GAP Seminar on "Some combinatorial structures involving Young tableaux "