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Tag Archives: Jack van Lint
From M12 to M24
On 20 January 2015, Paul Hjelmstad posted the following question on the GAP forum: Is there an easy way to generate a Steiner system S(5,8,24) for the Mathieu Group M24, if a Steiner system S(5,6,12) for the Mathieu Group M12 … Continue reading
Posted in exposition
Tagged Graham Higman, Jack van Lint, Mathieu group, outer automorphism, Paul Hjelmstad, Steiner system
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Solutions
The word “solutions” is much overused, even misused, now. When I see a van with “Cleaning solutions” on the side, I imagine it full of containers of ammonia or soapy water, while “Printing solutions” can only mean ink … But … Continue reading
Posted in books, teaching
Tagged Cambridge University Press, codes, Dan Hughes, designs, exercises, graphs, Higman-Sims, Jack van Lint, MUBs, quaternary codes, Westfield College
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Andries Brouwer is (nearly) 60
Last week there was a conference for Andries Brouwer’s 60th birthday. Actually he is 60 on 3/4/2011, but we had some lectures to celebrate his birthday on 4/3/2011. The picture shows Andries at my birthday party in Ambleside in 2007 … Continue reading
Posted in events
Tagged Andries Brouwer, Eindhoven, Jaap Seidel, Jack van Lint, root systems
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