Some basic lemmas about stable commutator lengths. Conjectures about 3-manifold groups and the holonomy problem. Stable commutator lengths in perfect groups e.g. mapping class groups.
Links:
[1] https://www.mpim-bonn.mpg.de/taxonomy/term/39
[2] https://www.mpim-bonn.mpg.de/node/4234
[3] https://www.mpim-bonn.mpg.de/node/2761