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Thursday, February 28, 2013

... Il CERCHIO di Echer spiegato da Coxeter ... e un po' di Lehmann



  
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http://it.wikipedia.org/wiki/Harold_Coxeter


The Petersen and Coxeter graphs

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http://www.maa.org/editorial/mathgames/mathgames_12_29_03.html

[...]
Of all the subjects that seem to have been most damaged by siloing and a lack of true interdisciplinarity, 
math seems to suffer the most.
After all, math is the language of the physical world. 

There’s more real math in the arc of a frisbee in flight than in all the word problems in a textbook. 
[...] CHRISlehmann 
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http://practicaltheory.org/blog/2013/02/28/we-dont-know-how-to-teach-math/
[ http://pinterest.com/pin/222998619021198228/  ]

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