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These four pictures present different appearances of one and the same
object. It is composed of the 16 imaginary cubes of the above artwork,
that is, all the representatives of the minimal convex imaginary
cubes. The object as a whole is also an imaginary cube, as this
picture shows. The imaginary cube components are arranged according to
the structure of the 2nd level approximation of the Sierpinski
tetrahedron, and their assignment and orientation are carefully chosen
so that they are connected at vertices. They are connected by threads
which are glued from the inside of the polyhedra at vertices. This
object is colored with 7 colors except for white; six colors are
assigned to faces and edges of the 6 directions with square
appearances, and those faces which compose the holes in the four
blocks are colored black. These holes have the form of a triangular
antiprismoid, which is among the 16 imaginary cube components.
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