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Portal:Mathematics/Selected picture/30

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animation showing what looks like a smaller inner cube with corners connected to those of a larger outer cube; the smaller cube passes through one face of the larger cube and becomes larger as the larger cube becomes smaller; eventually the smaller and larger cubes have switched positions and the animation repeats
animation showing what looks like a smaller inner cube with corners connected to those of a larger outer cube; the smaller cube passes through one face of the larger cube and becomes larger as the larger cube becomes smaller; eventually the smaller and larger cubes have switched positions and the animation repeats
A three-dimensional projection of a tesseract performing a simple rotation about a plane which bisects the figure from front-left to back-right and top to bottom. Also called an 8-cell or octachoron, a tesseract is the four-dimensional analog of the cube (i.e., a 4-D hypercube, or 4-cube), where motion along the fourth dimension is often a representation for bounded transformations of the cube through time. The tesseract is to the cube as the cube is to the square. Tesseracts and other polytopes can be used as the basis for the network topology when linking multiple processors in parallel computing.
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