Tag Archives: 1-factorisations

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

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From the archive, 9

Looking for a book yesterday, I turned up a file of old papers. One of them I think deserves an afterlife, so I re-typed it and here it is. First, the background. Let A be an n×n matrix. The permanent … Continue reading

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