Tag Archives: double Youden rectangles

Donald Preece Memorial Day

On Thursday we held a memorial day for Donald Preece at Queen Mary. You can find a web page with the program and information here. This page will remain as a record for the time being. If you have anything … Continue reading

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Donald’s design

In 1982, Donald Preece published a remarkable design (a “double Youden rectangle”) which he had recently constructed. The design is a layout of an ordinary pack of playing cards, with properties described below. I discussed this design before here. Donald … Continue reading

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