古代エジプトの20面ダイス
2023-06-20 古代ローマの「中空十二面体」
こちら↑は用途不明ですが、
>古代エジプトの20面ダイス
https://x.com/TokitaSuzakuG/status/1822966031591350427
( https://www.metmuseum.org/art/collection/search/551072 )
…
>a Greek oracle book composed in in the 2nd or 3rd century A.D.
>refers to throwing lots to obtain a number that would, through
>certain algorithms, lead to ready-prepared oracle questions and responses.
十進乱数の各桁を得るために使うには20面は都合がよいですね。
[関連記事]
https://suchowan.seesaa.net/search?keyword=面体
https://suchowan.seesaa.net/search?keyword=ローマ
[2024-08-18 追記]
>正二十面体を作れる
https://x.com/jmitani/status/1824685431994323399
[2025-09-03 追記]
>Die (icosahedron). Culture- Roman. Date- 2nd-3rd century AD.
https://x.com/archaeologyart/status/1962576214532530214
こちら↑は用途不明ですが、
>古代エジプトの20面ダイス
https://x.com/TokitaSuzakuG/status/1822966031591350427
( https://www.metmuseum.org/art/collection/search/551072 )
…
>a Greek oracle book composed in in the 2nd or 3rd century A.D.
>refers to throwing lots to obtain a number that would, through
>certain algorithms, lead to ready-prepared oracle questions and responses.
十進乱数の各桁を得るために使うには20面は都合がよいですね。
[関連記事]
https://suchowan.seesaa.net/search?keyword=面体
https://suchowan.seesaa.net/search?keyword=ローマ
[2024-08-18 追記]
>正二十面体を作れる
https://x.com/jmitani/status/1824685431994323399
[2025-09-03 追記]
>Die (icosahedron). Culture- Roman. Date- 2nd-3rd century AD.
https://x.com/archaeologyart/status/1962576214532530214
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