Tag Archives: Cheryl Praeger

An O’Nan-Scott note

Posted on 16/03/2022 by Peter Cameron

My old friend Leonard Soicher is visiting St Andrews this week, having made a better job of retiring than I did. Today he gently took me to task for using the expression “simple diagonal type” for one of the types … Continue reading →

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Cheryl Praeger

Posted on 26/01/2021 by Peter Cameron

Good news for a change. I just heard that Cheryl (my mathematical sister, third most prolific coauthor, and good friend) has been made a Companion of the Order of Australia. https://www.abc.net.au/news/2021-01-26/professor-cheryl-praeger-receives-companion-order-of-australia/13089958 Congratulations Cheryl!

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Very good news!

Posted on 17/10/2019 by Peter Cameron

Cheryl Praeger has been awarded the Australian Prime Minister’s Prize for Science. Here is an announcement on the ABC website. Congratulations Cheryl! And my thanks to Liz for sending me the news.

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Synchronization update

Posted on 30/10/2018 by Peter Cameron

There is some recent news about the synchronization project. Two steps forward have occurred. The set-up Here is a brief recapitulation. Let G be a transitive permutation group on Ω, where |Ω| = n. We say that G is non-synchronizing if there … Continue reading →

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Summer school at Marienheide

Posted on 24/09/2017 by Peter Cameron

Last week, I was lecturing at a summer school in Franz Dohrmann Haus, a very pleasant conference centre in the small town of Marienheide, not far from Köln. Apart from a walk on Wednesday afternoon, I didn’t get much exercise, … Continue reading →

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Two publications

Posted on 02/04/2015 by Peter Cameron

I don’t think it happened to me before that two of my papers were “published” on the same day. Fortunately, it didn’t happen on April Fools’ Day … One is my paper with Pablo Spiga on switching classes. I described … Continue reading →

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A symmetric design

Posted on 24/08/2014 by Peter Cameron

Quite a long time ago, Arunas Rudvalis discovered a symmetric 2-(14080,1444,148) design: a set of 14080 points, with 14080 subsets of size 1444 called blocks, with the property that any point lies in 1444 blocks, any two points in 148 … Continue reading →

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