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Monthly Archives: June 2011
The French Andes and spectral gaps
I have spent this last week in a maths conference at Peyresq, in the French alps. I am tempted to say “the French Andes”: an altitude of 1500m is not trivial at this latitude, and the climb from the sea … Continue reading
Posted in Uncategorized
Tagged Alps, Andes, depopulation, esperantist graphs, Lidice, lost hikers, mathematicians, Peyresq, phantom village, Schreier graphs, spectral gaps
6 Comments
Relief
This may not be immediately understandable to readers who are not Peruvianly informed.
Posted in Uncategorized
2 Comments
The Kalevala, the Cyberiad, Gödel and Tarski
I recently spent eight days in Finland, at the provocatively named Arctic Number Theory School, which even had some penguins in its poster. (Needless to say, the conference took place well South of the Arctic circle, and there are no … Continue reading
The value of the variable 