Please see my children’s website

http://www.laquartadimensione.com

Not only you’ll enjoy the colorful fruit salad, but the wordless 4D book has now been rearranged into a PDF. We hope you enjoy it.

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Please see my children’s website

http://www.laquartadimensione.com

Not only you’ll enjoy the colorful fruit salad, but the wordless 4D book has now been rearranged into a PDF. We hope you enjoy it.

A puzzle just for your eyes and brain. No paper-cutting. Not until you solve the puzzle, at least ðŸ™‚

What shape do we get if we close he hinges clockwise? What if we close them anti-clockwise?

“In contemporary society, the role of imaging and visual communication is universally acknowledged. However, there are still many opportunities which have not been adequately taken advantage of, or where the visual artwork, rather than bringing out the communication messages and contents, mocks them with a shower of special effects.”

An intuitive interface for playing with coefficients of the first five Fourier terms (sin and cos) and respectively, the first five terms of the Taylor expansion, and see what happens to their sum, compared to the original function. Also, get an intuitive idea of minimizing distance in the sense of the infinite-dimensional metric. Fully usable before knowing advanced math.

George Francis, 2006, A Topological Picturebook. If you need an excuse to buy, you may see there the tobacco pouch sphere eversion. But you don’t really need an excuse to buy. This is how visual textbooks should be.

Yes, dear readers, another hard-to-find video. If you have a copy, please contact me in private <grin>.

This is a piece of mathematical animation history, and was made on the glorious PDP (for the kids out there, that’s a 16-bit machine. Yep, in our days these usually work as washing machine embedded controllers….) By Nelson Max, published in 1976. It is no exhaggeration to say that generations of mathematicians learned to visualize a possible sphere eversion thanks to this video.

Unfortunately the video is out of print and worse, the masters were lost. The original Topology Film series had four films: the sphere eversion, planar homotopies of curves 1 and 2, and the Sierpinski curve.

In the early 2000, the director worked on a remake of “Outside In”, published in 2004 by A K Peters. That videotape is, as well, very hard to find. Please feel free to contact me in private if you have a copy.