Tag Archives: root systems

The ADE affair, 1

In the 1970s, the American Mathematical Society held a symposium on Mathematical developments arising from Hilbert problems. Each of Hilbert’s problems was described, and subsequent progress and developments traced, by at least one expert in the area. As part of … Continue reading

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Ambiguity, 2

JoAnne Growney has recently referred again to our small disagreement about the role of ambiguity in mathematics and in poetry. The fact is that I really agree with her, but it is very hard to make a good argument for … Continue reading

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Andries Brouwer is (nearly) 60

Last week there was a conference for Andries Brouwer’s 60th birthday. Actually he is 60 on 3/4/2011, but we had some lectures to celebrate his birthday on 4/3/2011. The picture shows Andries at my birthday party in Ambleside in 2007 … Continue reading

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