The Institute of Mathematics and Informatics of the Bulgarian Academy of Sciences, Nagoya Institute of Technology, Japan and St. Cyril and St. Methodius University of Veliko Tarnovo  are organizing the  6th International Colloquium on Differential Geometry and its Related Fields. The colloquium will take place in Veliko Tarnovo, Bulgaria  from September 4 to September 8, 2018. This scientific event has been held since 2008 every two years as a continuation of the International Workshops on Complex Structures and Vector Fields, a workshop organized  by Kouei Sekigawa (Niigata University) and Stancho Dimiev (IMI-BAS) and held in Bulgaria from 1992 to 2008. This year's edition of the colloquium is organized by Hideya Hashimoto (Meijo University, Nagoya, Japan), Toshiaki Adachi and Misa Ohashi (Nagoya Institute of Technology, [...]