魔術正方體:修订间差异
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{{about|數學上的魔術立方體|益智玩具|魔術方塊}} |
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{{about|the mathematical concept|the flashbulb cartridges|Magicube|the puzzle|Rubik's Cube}} |
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[[File:Simple Magic Cube.svg|thumb|right|一個3 × 3 × 3 |
[[File:Simple Magic Cube.svg|thumb|right|一個3 × 3 × 3[[简易魔术正方体]]的例子]] |
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在[[数学]]中,'''魔術正方體'''指[[維度|三維]]的[[幻方]],也就是排列成''n'' × ''n'' × ''n''正方體的一組不重複[[整數]],其中每行、每列、每個柱及四條{{tsl|en|Space diagonals||空間對角線}}上數字的和均相同,等於立方體的[[幻方常數]],記為''M''<sub>3</sub>(''n'')。<ref name=":0">{{Cite mathworld|urlname=MagicCube|title=Magic Cube|access-date=2016-12-04|archive-date=2021-03-07|archive-url=https://web.archive.org/web/20210307033550/https://mathworld.wolfram.com/MagicCube.html|dead-url=no}}</ref>若魔術立方體由數列1, 2, ..., ''n''<sup>3</sup>構成,則可以證明其幻方常數為{{OEIS|id=A027441}} |
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==參見== |
==參見== |
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* [[Perfect magic cube]] |
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* [[Semiperfect magic cube]] |
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* [[Multimagic cube]] |
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* {{tsl|en|Magic cube class||Magic cube class}} |
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* [[Asymptotic magic hyper-tesseract]] |
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* {{tsl|en|John R. Hendricks||John R. Hendricks}} |
* {{tsl|en|John R. Hendricks||John R. Hendricks}} |
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== 注釋 == |
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{{reflist}} |
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<references />{{Magic polygons}} |
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==外部連結== |
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* {{MathWorld |urltitle=MagicCube |title=Magic Cube}} |
* {{MathWorld |urltitle=MagicCube |title=Magic Cube}} |
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* Harvey Heinz, [http://members.shaw.ca/hdhcubes/index.htm All about Magic Cubes] |
* Harvey Heinz, [http://members.shaw.ca/hdhcubes/index.htm All about Magic Cubes] {{Wayback|url=http://members.shaw.ca/hdhcubes/index.htm |date=20181124125113 }} |
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* Marian Trenkler, [http://math.ku.sk/~trenkler/aa-cub-01.pdf Magic p-dimensional cubes] |
* Marian Trenkler, [http://math.ku.sk/~trenkler/aa-cub-01.pdf Magic p-dimensional cubes] {{Wayback|url=http://math.ku.sk/~trenkler/aa-cub-01.pdf |date=20160303231904 }} |
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* Marian Trenkler, [http://math.ku.sk/~trenkler/05-MagicCube.pdf An algorithm for making magic cubes] |
* Marian Trenkler, [http://math.ku.sk/~trenkler/05-MagicCube.pdf An algorithm for making magic cubes] {{Wayback|url=http://math.ku.sk/~trenkler/05-MagicCube.pdf |date=20160303171656 }} |
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* Marian Trenkler, [http://www.imi.ajd.czest.pl/zeszyty/zeszyt13/Trenkler.pdf On additive and multiplicative magic cubes] |
* Marian Trenkler, [https://web.archive.org/web/20120321091253/http://www.imi.ajd.czest.pl/zeszyty/zeszyt13/Trenkler.pdf On additive and multiplicative magic cubes] |
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* [http://sites.google.com/site/aliskalligvaen/home-page Ali Skalli's magic squares and magic cubes] |
* [http://sites.google.com/site/aliskalligvaen/home-page Ali Skalli's magic squares and magic cubes] {{Wayback|url=http://sites.google.com/site/aliskalligvaen/home-page |date=20130525015716 }} |
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[[Category: |
[[Category:魔術正方體]] |
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[[Category:趣味數學]] |
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[[Category:幻方]] |
2022年11月23日 (三) 10:11的最新版本
在数学中,魔術正方體指三維的幻方,也就是排列成n × n × n正方體的一組不重複整數,其中每行、每列、每個柱及四條空間對角線上數字的和均相同,等於立方體的幻方常數,記為M3(n)。[1]若魔術立方體由數列1, 2, ..., n3構成,則可以證明其幻方常數為(OEIS數列A027441)
另外,如果每個截面對角線上的數字之和亦等於幻方常數,則稱此立方體為完美魔方;否則,稱其為半完美魔方。數字n稱為魔方的階。如果幻方破碎空間對角線上的數字和也等於幻方常數,則稱其為泛對角線立方體。
參見
[编辑]注釋
[编辑]- ^ Weisstein, Eric W. (编). Magic Cube. at MathWorld--A Wolfram Web Resource. Wolfram Research, Inc. [2016-12-04]. (原始内容存档于2021-03-07) (英语).
外部連結
[编辑]- 埃里克·韦斯坦因. Magic Cube. MathWorld.
- Harvey Heinz, All about Magic Cubes (页面存档备份,存于互联网档案馆)
- Marian Trenkler, Magic p-dimensional cubes (页面存档备份,存于互联网档案馆)
- Marian Trenkler, An algorithm for making magic cubes (页面存档备份,存于互联网档案馆)
- Marian Trenkler, On additive and multiplicative magic cubes
- Ali Skalli's magic squares and magic cubes (页面存档备份,存于互联网档案馆)