Tag Archives: Lie algebras

The ADE affair, 6

Posted on 15/03/2017 by

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 →

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Magic square and Oxo cube

Posted on 16/11/2013 by

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 →

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E7.5

Posted on 03/09/2013 by

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 →

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