Hippasos

Japanese: Hippasos
Hippasos

...Another name for the five regular polyhedrons (tetrahedron, cube, octahedron, dodecahedron, and icosahedron), which are described in the Timaeus. The tetrahedron, hexahedron, and dodecahedron are said to have been discovered by the Pythagoreans, and the octahedron and icosahedron were discovered by Theaitētos (4th century BC). There is a legend that a Pythagorean scholar named Hippasos drowned after revealing the secret of the dodecahedron, and it is well known that Kepler later combined these Platonic solids to create a model of the universe. In both cases, we can see an attitude of considering numbers and their concrete shapes as mysterious, just like the Platonic numbers. Numbers [Yoshihiro Matsumiya]. ...

*Some of the terminology that mentions "Hippasos" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…五つの正多面体(正四面体,正六面体,正八面体,正十二面体,正二十面体)の別称で,《ティマイオス》に記述されていることによるが,正四,六,十二面体はピタゴラス学派の,正八,二十面体はテアイテトスTheaitētos(前4世紀)の発見によるという。ヒッパソスHippasosなるピタゴラス学派の学者が正十二面体の秘密を漏らしたため溺死したという伝承があり,後世ケプラーがこの〈プラトン立体〉を組み合わせて宇宙モデルを構想したことも有名だが,いずれもそこにはプラトン数と同様,数およびその具体化である図形を神秘的なものとして考える態度がうかがえる。数【松宮 由洋】。…

※「Hippasos」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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