This paper on ebay: http://www.ebay.co.uk/itm/221197137799?
More links & stuff in full description below ↓↓↓
Just how hard was the second problem cracked by Will in Good Will Hunting? Matt Damon!
And who doesn’t love Homeomorphically Irreducible Trees?
This video features Dr James Grime – http://singingbanana.com/
Music by Alan Stewart – http://www.youtube.com/user/AlanKey86
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