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Tag Archives: random graph
Aliens Do Exist
The people from the planet Ade have intercepted radio transmissions from Earth, and have discovered that we know about the Petersen graph and the root system E6. One day, a flying saucer from Ade arrives on Earth and delivers an … Continue reading
Posted in doing mathematics, events
Tagged Petersen graph, random graph, root systems, Sira Gratz, University of Leeds
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Outer automorphisms
I have just put on the arXiv a paper I wrote with Sam Tarzi ten years ago. I want to say here something about the context, the contents of the paper, and the reason for posting it now. Outer automorphisms … Continue reading
A precious jewel
One of my favourite textbooks is Simmons’ Introduction to Topology and Modern Analysis. In the introduction, the author distinguishes two types of mathematics: the rare jewels, like the formula saying that the Riemann zeta function evaluated at 2 is π2/6; … Continue reading
Posted in exposition
Tagged pseudo-arc, random graph, Slavomir Solecki, topology, Urysohn space
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Almost highly transitive
I want to discuss a concept I have known about for quite a long time, but never found any real use for. Suggestions welcome! Highly transitive groups A permutation group is n-transitive if it has a single orbit on the … Continue reading
Posted in Uncategorized
Tagged generic, Henson's graph, homogeneous, multiorders, orders, Petrov-Vershik measure, random graph, universal
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A visit to Oxford
Last night I went to Oxford to talk to the Invariants, the undergraduate mathematics society. I first arrived in Oxford in 1968; the mathematicians had fairly recently moved into the new Mathematical Institute. The letters I had received in Australia … Continue reading
Posted in events, history
Tagged Andrew Wiles building, Mathematical Institute, Oxford Invariants, random graph
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