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# Category Archives: Uncategorized

## Drums

Here is a small contribution to Bob Dylan scholarship. This occurred to me during jetlag-induced sleeplessness. In several of Dylan’s songs of the mid-1960s, there is an association between mysterious dominating women and drums: The heroine of “She belongs to … Continue reading

## Happy New Year

Back in London after my trip to the southern hemisphere. There is more to say about that, which I hope to get round to saying in the near future. But I spent Christmas on my brother’s farm at Lagoon Pocket, … Continue reading

## ACCMCC, Days 2 and 3

Tuesday started with an impressive plenary talk from Nevena Francetić on “group divisible coverings” (these are, roughly, like covering arrays but with some blanks. The range of methods she used was impressive: the Rödl nibble, an extension of Baranyai’s theorem, … Continue reading

Posted in events, Uncategorized
Tagged covering design, parity, phylogenetic networks, Ringel's conjecture, Rodl nibble
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## December

The southern (Firth of Forth) coast of Fife has many caves in the cliffs, as evidenced by placenames such as Pittenweem and Weymss. Written like this, they are a bit easier for non-Gaelic speakers to pronounce than you would guess … Continue reading

## You couldn’t make it up

A warning came round on the departmental email list that “NERC recently started to office reject grant applications containing incorrect font sizes”. It seems that their regulations state: Principal Investigators should ensure that all proposal contributors are aware of and … Continue reading

## Graph isomorphism

I just read Ken Regan’s report on the Gödel’s Last Letter blog that Laci Babai has a quasi-polynomial algorithm for graph isomorphism “Quasi-polynomial” means exp(O((log n)c)) for some c: c = 1 would be polynomial. Congratulations Laci! Oh, and here he is at … Continue reading

## November

Many houses in Prague have a symbol of some kind on the door, often an animal. This house near the Malastrana end of the Charles Bridge has a star. The original has the star painted in the same colour as … Continue reading