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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Ludolph van Ceulen ： ウィキペディア英語版 Ludolph van Ceulen Ludolph van Ceulen (, ; 28 January 1540 – 31 December 1610) was a German-Dutch mathematician from Hildesheim. He emigrated to the Netherlands. Van Ceulen moved to Delft to teach fencing and mathematics. In 1594 he opened a fencing school in Leiden. In 1600 he was appointed the first professor of mathematics at Leiden University. He died in Leiden. == Calculating == Ludolph van Ceulen spent a major part of his life calculating the numerical value of the mathematical constant , using essentially the same methods as those employed by Archimedes some seventeen hundred years earlier. He published a 20-decimal value in his 1596 book ''Van den Circkel'' ("On the Circle"), later expanding this to 35 decimals. After his death, the "Ludolphine number", :3.14159265358979323846264338327950288..., was engraved on his tombstone in Leiden. The tombstone was eventually lost, but later restored in 2000. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ludolph van Ceulen」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.