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Laying train tracks

Originally posted on Geometry and the imagination:
This morning I was playing trains with my son Felix. At the moment he is much more interested in laying the tracks than putting the trains on and moving them around, but he…

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Cofibrations

Originally posted on Climbing Mount Bourbaki:
The idea of a cofibration will be fundamental as we talk further about homotopy theory, as will its dual idea of a fibration. The point of the cofibration condition is the following. Oftentimes, we…

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http://c.brightcove.com/services/viewer/federated_f9?isVid=1 Head of Chinese government’s sovereign investments: Jin Liqun (family-name personal-name order) Europe lacks a “master plan” to deal with the currency problems Europe-wide bonds slowing down the Chinese economy on purpose rural migrants, inland vs coastal “Social harmony is … Continue reading

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http://c.brightcove.com/services/viewer/federated_f9?isVid=1&isUI=1 Somebody can kill you, at any time. (Source: http://c.brightcove.com/)

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Just in case you forgot that primitive living means eating live cockroaches and bony rats’ tails for extra protein. The Adi people of Tibet/India (Aranatra Pradesh) play host to the BBC’s Bruce Parry. (Source: https://twitter.com/)

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The Escape Artist by Ludus (Source: http://www.youtube.com/)

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Interesting how Austrian economists see themselves: Ludwig von Mises was a genius (obviously) a Man of the Mind — and that’s a good thing “dignified ruthlessness” seriousness … also a good thing … Serious about Reality quoting Ayn Rand is … Continue reading

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