| 21. | Escher made four " Circle Limit " drawings of tilings that use hyperbolic geometry.
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| 22. | The non-Euclidean geometry that Lobachevsky developed is referred to as hyperbolic geometry.
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| 23. | Two years later he wrote on computations in hyperbolic geometry in the same journal.
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| 24. | This results in a surface possessing hyperbolic geometry.
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| 25. | Hyperbolic geometry is the most prevalent geometry in this picture and also the most complicated.
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| 26. | The most prevalent geometry is hyperbolic geometry.
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| 27. | These have proven to be very important in the study of manifolds and hyperbolic geometry.
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| 28. | From 1903 to 1908 he wrote on hyperbolic geometry ( or Borel ( 1913 ).
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| 29. | The theorems of absolute geometry hold in hyperbolic geometry as well as in Euclidean geometry.
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| 30. | The subject of hyperbolic geometry was non-Euclidean geometry, a departure from tradition.
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