最終更新日：2025/11/29
The illumination problem in mathematics asks whether a room with mirrored walls can always be illuminated by a single-point light source, and it was settled in 1958 when examples of rooms that cannot be so illuminated were found.
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The illumination problem in mathematics asks whether a room with mirrored walls can always be illuminated by a single-point light source, and it was settled in 1958 when examples of rooms that cannot be so illuminated were found.
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元となった例文
数学における照明問題、つまり鏡張りの壁を持つ部屋が点光源一つで常に照らせるかどうかを問う問題は、1958年にそのように照らせない部屋が存在することが示されて解決された。
