Tuesday 17 February 2015

Can you take a rubber band and turn it into a knot? Watch George Hart's knot theory


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Are you unsure if a particular book is the right choice for you?


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Define \(f: \mathbb{R} \rightarrow \mathbb{R}\) by \[f(x)= \begin{cases}(1-\cos x) \sin \left(\frac{1}{x}\right), & x \neq 0 \\ 0, &a...