A brief review of some work on BPS states, wall-crossing, hyperkahler geometry, Hitchin systems, etc.

This talk will give a brief overview focused on six papers written by D. Gaiotto, G. Moore, and A. Neitzke
loosely centered around the topics mentioned in the title. The papers are on the arXiv.
Background reading: Some short reviews are:
https://arxiv.org/pdf/1211.2331.pdf
https://arxiv.org/pdf/1308.2198.pdf
https://arxiv.org/pdf/1412.7120.pdf
Some pedagogical/summer school lecture notes can be found in talks # 31, 35, 47, 84 on the home page of G. Moore:
http://www.physics.rutgers.edu/~gmoore/