Category Archives: history

the shadow of the past

Partition homogeneity

This post discusses a paper by Jorge André, João Araújo and me, which has just been accepted for the Journal of Algebra. There is a slight tangle to the history of this paper, which I want to describe. First a … Continue reading

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ANZ 9: Lagoon Pocket

The last leg of my trip to the Southern Hemisphere was Christmas with my brother John and his wife Jenny on their dairy farm at Lagoon Pocket, near Gympie. On the way from Alexandra Headland to Lagoon Pocket, as is … Continue reading

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ANZ 8: Glasshouses

The Glasshouse Mountains are a number of volcanic cores in the hinterland of the Sunshine Coast north of Brisbane. Over millions of years, the surrounding soil has eroded away leaving these strangely shaped peaks. They were named by Captain Cook … Continue reading

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ANZ 6: Prison island

Moreton Bay was first occupied by Europeans in 1824 as a prison for convicts transported from Britain. It was part of the New South Wales penal system, and was reserved for hardened criminals and recidivists. The commandant, Captain Logan, had … Continue reading

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ANZ 4: IXL

When I was at primary school, we were taught the rules for Roman numerals. This was not just a theoretical study: in those days, many clocks used Roman numerals (though often they broke the rules by using IIII for 4), … Continue reading

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In the powerhouse

Portugal has various sources of power, as the picture shows. In the last week of my stay, I had the great privilege of a visit to the Barragem de Castelo de Bode, a dam built in 1950. The dam is … Continue reading

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The synchronizing monster

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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