Johnson solidの意味・使い方・読み方 | Weblio英和辞書

意味

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Johnson solid

ジョンソンの立体

正四角錐 (J1)。

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Wiktionary英語版

出典：Wiktionary

Johnson solid

出典:『Wiktionary』 (2026/05/18 17:33 UTC 版)

語源

From Johnson (“a surname”) + solid, after American mathematician Norman Johnson, who listed them in 1966.

名詞

Johnson solid (plural Johnson solids)

(geometry) Any of a class of convex polyhedra that have regular faces but are not uniform (that is, not Platonic solids, Archimedean solids, prisms, or antiprisms).
- 1986 April, Andrew Hume, Folding Regular Polyhedra, AUUGN: Australian Unix Users Group Newsletter, Volume 6, Number 5, page 40,
  
  The Johnson solids, combined with the Archimedean polyhedra and five of the regular polyhedra, constitute all the possible convex polyhedra with regular faces.
- 2003, Rona Gurkewitz, Bennett Arnstein, Multimodular Origami Polyhedra: Archimedeans, Buckyballs and Duality, page 2:
  
  There are other possible models that we have not written about and for which we do not include pictures. namely the Johnson solids and their truncations [2]. (The egg is an approximation of a truncation of a Johnson solid.)
- 2012, Thomas Hull, Project Origami: Activities for Exploring Mathematics, 2nd edition, page 159:
  
  Students will be very unlikely to discover very many of the Johnson solids on their own. Someone may come up with the triangular and pentagonal dipyramids, but the others are just not very intuitive. Once students are convinced that there are no other possibilities than the ones they've come up with, then it is time to unveil some of the more complicated Johnson solids.

同意語

(convex non-uniform polyhedron that has regular faces): Johnson polyhedron

Further reading

Johnson solid on Wikipedia.Wikipedia
List of Johnson solids on Wikipedia.Wikipedia

ウィキペディア英語版

出典：Wikipedia

Johnson solid

出典:『Wikipedia』 (2011/04/03 22:18 UTC 版)

英語による解説

ウィキペディア英語版からの引用

引用: In geometry, a Johnson solid is a strictly convex polyhedron, each face of which is a regular polygon, but which is not uniform, i.e., not a Platonic solid, Archimedean solid, prism or antiprism. There is no requirement that each face must be the same polygon, or that the same polygons join around each vertex. An example of a Johnson solid is the square-based pyramid with equilateral sides (J1); it has 1 square face and 4 triangular faces.

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Wiktionary
Text is available under Creative Commons Attribution-ShareAlike (CC-BY-SA) and/or GNU Free Documentation License (GFDL).
Weblio英和・和英辞典に掲載されている「Wiktionary英語版」の記事は、WiktionaryのJohnson solid (改訂履歴)の記事を複製、再配布したものにあたり、Creative Commons Attribution-ShareAlike (CC-BY-SA)もしくはGNU Free Documentation Licenseというライセンスの下で提供されています。
Wikipedia
Text is available under Creative Commons Attribution-ShareAlike (CC-BY-SA) and/or GNU Free Documentation License (GFDL).
Weblio英和・和英辞典に掲載されている「Wikipedia英語版」の記事は、WikipediaのJohnson solid (改訂履歴)の記事を複製、再配布したものにあたり、Creative Commons Attribution-ShareAlike (CC-BY-SA)もしくはGNU Free Documentation Licenseというライセンスの下で提供されています。