Top Posts
Recent comments
- Tim Penttila on A rant
- Tim Penttila on A rant
- Peter Cameron on A rant
- Dima on Oligomorphic groups: topology or geometry?
- G. Smith on The symmetric group, 1
Blogroll
- Astronomy Picture of the Day
- Azimuth
- British Combinatorial Committee
- Comfortably numbered
- Diamond Geezer
- Exploring East London
- From hill to sea
- Gödel's lost letter and P=NP
- Gil Kalai
- Jane's London
- Jon Awbrey
- Kourovka Notebook
- LMS blogs page
- Log24
- London Algebra Colloquium
- London Reconnections
- MathBlogging
- Micromath
- Neill Cameron
- neverendingbooks
- Noncommutative geometry
- numericana hall of fame
- Ratio bound
- Robert A. Wilson's blog
- Since it is not …
- Spitalfields life
- Sylvy's mathsy blog
- SymOmega
- Terry Tao
- The Aperiodical
- The De Morgan Journal
- The ICA
- The London column
- The Lumber Room
- The matroid union
- Theorem of the day
- Tim Gowers
- XKCD
Find me on the web
Cameron Counts: RSS feeds
Meta
Tag Archives: Lie algebras
The ADE affair, 6
Earlier this semester, we had a beautiful seminar by Pierre-Philippe Dechant, whose work has thrown some entirely new light on this beautiful work of art. I would like to explain a bit about this here. For more details, see his … Continue reading
Magic square and Oxo cube
Most physicists now seem to think that the answer to the big questions about the universe is found in eleven dimensions, in something called M-theory. But to me it is very heartening that some mavericks are still prepared to look … Continue reading
Posted in exposition
Tagged Freudenthal, Hermitian matrices, Jordan algebras, Lie algebras, London algebra colloquium, Monster
1 Comment
E7.5
I’m at the workshop on Algebra, Combinatorics, Dynamics and Applications in Belfast this week. Despite the extremely friendly title, this is a meeting that takes me well out of my comfort zone. An excellent thing: I learned about categorification and … Continue reading
