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单词 Ludolfzahl
释义

Ludolfzahl

German

Etymology

Ludolf (Ludolph) + Zahl (number) (an irrational constant named after mathematian Ludolph van Ceulen (1540-1610))

Pronunciation

  • IPA(key): [ˈluːdɔlfˌtsaːl]
  • Hyphenation: Lu‧dolf‧zahl

Noun

Ludolfzahl f (genitive Ludolfzahl, no plural)

  1. (mathematics) Ludolph's number or Ludolphine number: the number π (an irrational constant representing the ratio of a circle's circumference to its diameter in Euclidean geometry; approximately 3.14159...,)

Declension

Synonyms

  • π, Pi, Archimedes-Konstante, Kreiskonstante, Kreiszahl, ludolfsche Zahl

Further reading

  • Ludolfzahl” in Digitales Wörterbuch der deutschen Sprache
  • Ludolfzahl in Duden online
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