Assertion: dimensional form | /r/HasProperty | rotated onto its mirror-image,:141
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Source sentences:
text: In 1827 Möbius realized that a fourth dimension would allow a three-dimensional form to be rotated onto its mirror-image,:141 and by 1853 Ludwig Schläfli had discovered many polytopes in higher dimensions, although his work was not published until after his death.:142–143 Higher dimensions were soon put on firm footing by Bernhard Riemann's 1854 thesis, Über die Hypothesen welche der Geometrie zu Grunde liegen, in which he considered a "point" to be any sequence of coordinates (x 1 , ..., x n ).