Lars Louder

"It's rather mystifying when you think about songs, where they come from, and, you don't really go to songwriting school, you, you learn by listening to tunes, and then you try to understand them, and take them apart, and see what they're made of, and, you wonder if you can make one too." -- Tom Waits

Associate Professor in the math department at UCL.


I am co-director for first year of the London School of Geometry and Number Theory.

First year students can find their summer reading list here.


Our geometry and topology group.

Groups and geometry in the south east


Papers and preprints

One-relator groups

Limit and free groups

Other groups

Not groups