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# Tag Archives: Hadamard matrices

## London Combinatorics Colloquia 2019

In London last week for the two combinatorics colloquia, at Queen Mary and LSE. The weather was unusually grey and rainy; it seems in retrospect that it is almost always fine and sunny for this event, but I know that … Continue reading

Posted in events, exposition
Tagged 1-factorisations, Hadamard matrices, model theory, Ramsey theory, Regularity Lemma, Schur's theorem, stability, topology
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## 10th birthday of MSG

Another event last week was the 10th anniversary talk in the Mathematics Study Group at South Bank University. This group was set up by Carrie Rutherford, whose photo is below (as well as a mathematician at South Bank, she is … Continue reading

## Conference matrices

I’ve mentioned conference matrices a couple of times recently. On Friday I gave a talk about them, from basics (proof of Hadamard’s inequality) through to the most recent (an email last week from Will Orrick). The notes are here. It … Continue reading

Posted in exposition, mathematics
Tagged conference matrices, Hadamard matrices, Will Orrick
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