GRG Group
Groups and Geometry

Projects GRG

Geometry projects with help of our 3D-printers at HITS:

Comparing Hyperbolic and Euclidean Geometry

22. October 2019

Tesselations of the euclidean and the hyperbolic plane Hyperbolic and euclidean geometry have a quite distinct taste and are very different …

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Convex set constructed from a quadruple of flags

Projective Geometry: Transformations of Four Flags

20. October 2019

What is a flag? A flag consists of a line and a point lying on that line. We consider flags in …

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Projective Geometry: Transformations of Three Flags

18. October 2019

Flags consist of a line and a point lying on the line. There exist different transformations of flags, such as the …

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Wobbler

1. September 2019

The so-called wobbler is a very simple geometrical object. The two discs are cut from a cylinder with a cut plane …

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“Hyperbolic” Polysphericons

1. September 2019

“Hyperbolic” polysphericons differ from the common polysphericons with respect to the curvature of their surfaces. The concept of curvature is therefore …

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Polycons

1. September 2019

Polycons have been devised by David Hirsch who patented the sphericon after having discoverd it (independently from others) in 1980. In comparison …

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Polysphericons

1. September 2019

Polysphericons are solids which can be obtained from polygons with a revolution, cutting in half and gluing back together. One commonly …

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The Oloid

1. September 2019

The oloid is a solid which has been discovered by Paul Schatz in the beginning of the 20th century. He was …

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Steinmetz Solids

30. August 2019

Steinmetz solids were discovered by the American-German engineer Charles Steinmetz who was active during the end of 18th century and early 19…

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