Tag Archives: Steiner systems

Synchronization and all that, 2

Posted on 10/10/2017 by Peter Cameron

The story I told in the last post is not over. The recent development is that we spotted a mistake in the paper. An easy mistake to make: we had simply used the symbol n in two different places with … Continue reading →

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EKR, Steiner systems, association schemes, and all that

Posted on 29/09/2017 by Peter Cameron

A great number of mathematical problems amount to looking in a large but highly structured graph, and finding a complete or null subgraph of largest possible size there. For a simple example, consider Latin squares of order n. One of … Continue reading →

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The synchronizing monster

Posted on 11/11/2015 by Peter Cameron

Today, a long paper on synchronizing groups (108 pages), by João Araújo, Ben Steinberg, and me, appears on the arXiv. It has been a long time coming. To quote from a post of mine in 2010, I became involved in … Continue reading →

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Steiner systems exist, 2

Posted on 21/04/2014 by Peter Cameron

One of the inevitable consequences of getting old is that my brain becomes more and more like a Swiss cheese, and important pieces of information fall through the holes. So I owe an apology to Michael Braun, Tuvi Etzion, Patric … Continue reading →

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Combinatorics in Scotland, group theory in Portugal

Posted on 18/03/2014 by Peter Cameron

I never really wanted to retire. For various reasons which no longer matter, I decided to retire from my position at Queen Mary, University of London, on turning 65 two years ago. I hoped that I would find enough to … Continue reading →

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