Introduction to algebraic stacks / K. Behrend
BPS states and the P=W conjecture / W.Y. Chuang, D.-E. Diaconescu and G. Pan
Representations of surface groups and Higgs bundles / Peter B. Gothen
Introduction to stability conditions / D. Huybrechts
An introduction to d-manifolds and derived differential geometry / Dominic Joyce
13/2 ways of counting curves / R. Pandharipande and R. P. Thomas.