File:Sketch of snow crystal by René Descartes.jpg

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English: Sketch of snow crystal by René Descartes, inspired by Johannes Kepler's book.
日本語: ルネ・デカルトの雪の結晶のスケッチ、ヨハネス・ケプラーの本を読んで関心を持った。
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Source: http://mathsoc.jp/publication/tushin/0203/mimura2-3.pdf Mathematical Society of Japan

Mathematical Society of Japan: 自然界に現われる紋様・パターンの理解に向けて 数学からの歩みより三村昌泰（東京大学大学院） at the Wayback Machine (archived 2010-11-27)
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current02:17, 21 July 2009Thumbnail for version as of 02:17, 21 July 20092,497 × 1,507 (337 KB)Namazu-tron (talk | contribs){{Information |Description={{en|1=Sketch of snow crystal by René Descartes}} {{ja|1=ルネ・デカルトの雪の結晶のスケッチ}} |Source=Source: http://mathsoc.jp/publication/tushin/0203/mimura2-3.pdf Mathematical Society of Japan |Author=[[U

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