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Jonathan Shock
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A foray into a new number system - an introduction to imaginary numbers
This is the introduction which I give to my first year mathematics class when they see imaginary numbers for the first time. I thought I'd type it up here as it's received good reactions the two times that I've introduced it in this format. Note that this p...

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Dunhuang to Jiayuguan to Zhangye to Beijing
I left you hanging as I failed miserably to steer my way through the cultural peculiarities of after-dinner etiquette in China. We were in Dunhang, in the West of Gansu province and I'd spent the day with a Chinese tour group, riding camels and hiking over ...
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