Which Extra Topic(s)?

This year, it looks like there will be some time in the last couple of lectures to cover some 'extra topics', which can in principle differ from year to year.

If there are any in which any of you have particular interest, please either comment here or drop me a line.

I haven't yet made these lectures, so let me know what interests you.

'Special Topics' at the end?

If you have any preferences for what special topics (the ones that could change from year to year in my version of this course) you would like to see covered at the end, please let me know. Nonlinear science is a very big field, and if anybody is particularly interested in covering something, I will endeavor to say something about relevant material.

Just let me know.