Category Archives: Uncategorized

Impact update

My comments on impact were cited by Ursula Martin and her co-author Laura Meagher here. Worth a look. PS Here’s the abstract: This empirical study explored how research can generate impacts by investigating different sorts of impacts from one academic … Continue reading

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Automorphism groups of transformation semigroups

I have been in the transformation semigroups game for nearly ten years now, but I still feel that I am finding my feet. Here is apparently a huge difference between permutation groups and transformation semigroups, one which is still not … Continue reading

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Update on Babai’s result

I learned yesterday that Harald Helfgott had found a mistake in László Babai’s result on the complexity of graph isomorphism. The algorithm and the bulk of the analysis still stands; it was just problem with the accounting showing that the … Continue reading

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Happy New Year

Happy New Year! But where are we headed? As time goes on, fewer and fewer people actually visit this page, as opposed to subscribing by email or to the RSS feed, so the WordPress end-of-year report gives less information about … Continue reading

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Anne Street

Anne Penfold Street died this week. Anne arrived at the University of Queensland as a lecturer while I was a student there. She taught me measure theory; a feature of her well-organised lectures was that all results were numbered in … Continue reading

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h-index

To return to an old theme: Today my h-index has reached 50, at least in the opinion of Google Scholar. According to this site, I have 10259 citations. In case you think this is unreasonably high, you might turn to … Continue reading

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Michel Deza

I have just heard that Michel Deza died in an accidental fire in his apartment in Paris. Michel was one of my earliest collaborators, and a good friend. This is not an obituary, just a few words to mark his … Continue reading

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