| 单词 | ludolph's number |
| 释义 | > as lemmasLudolph's number Ludolph's number: the number π (see pi n.1). ΘΚΠ the world > relative properties > number > mathematical number or quantity > [noun] > infinitesimal > pi pi1706 Ludolph's number1894 1887 Encycl. Brit. XXII. 434/2 In Germany the ‘Ludolphische Zahl’ is still a common name for the ratio.] 1894 F. Cajori Hist. Math. 154 The value of π is therefore often named ‘Ludolph's number’. 1959 Webster's Biogr. Dict. at Ceulen Ludolph van... Known for computations of the value of π (Ludolphian, or Ludolph's number). < as lemmas |
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