Tag Archives: Euler Characteristic

Odd-shaped Balls

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UK Uneven road sign

News report: Football ground street signs are wrong, says fan Folks in the UK were berating the people in charge of road signs last year for their depiction of a football (that’s the round one that people actually kick with their feet) on signs pointing to football (soccer) grounds. At the heart of the matter is the geometric impossibility of… Read more »