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pappus    
n. 冠毛

冠毛

pappus
n 1: calyx composed of scales or bristles or featherlike hairs
in plants of the Compositae such as thistles and dandelions


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  • Pappus of Alexandria - Wikipedia
    Pappus of Alexandria ( ˈpæpəs ⓘ; Ancient Greek: Πάππος ὁ Ἀλεξανδρεύς; c 290 – c 350 AD) was a Greek mathematician of late antiquity known for his Synagoge (Συναγωγή) or Collection (c 340), [1] and for Pappus's hexagon theorem in projective geometry
  • Pappus of Alexandria | Greek Mathematician Ancient Geometer - Britannica
    Pappus of Alexandria was the most important mathematical author writing in Greek during the later Roman Empire, known for his Synagoge (“Collection”), a voluminous account of the most important work done in ancient Greek mathematics
  • Pappus - Master Gardeners of Northern Virginia
    pappus: an appendage of the cypsela (fruit) of the Asteraceae consisting of one to many bristles, awns, scales, setae, or coronas that assists in seed dispersal
  • Pappus (290 - 350) - Biography - MacTutor History of Mathematics
    Pappus is the last of the great Greek geometers and one of his theorems is cited as the basis of modern projective geometry He wrote commentaries on Euclid's Elements and Ptolemy's Almagest
  • Pappus | Biography | Research Starters - EBSCO
    He is credited with the "Pappus problem," which has influenced notable mathematicians such as René Descartes and Sir Isaac Newton Additionally, Pappus explored mechanical problems and aimed to popularize complex mathematical concepts for broader audiences
  • Pappus | plant anatomy | Britannica
    The pappus consists of one to many dry scales, awns (small pointed processes), or capillary (hairlike) bristles; in some the scales may be joined by their margins to form a crownlike ring at the summit of the ovary
  • Pappus Theorem - MathPages
    Pappus of Alexandria was a Greek mathematician who lived around the end of the third century AD, although the exact date is uncertain
  • Biography:Pappus of Alexandria - HandWiki
    Pappus of Alexandria ( ˈpæpəs (listen); Ancient Greek: Πάππος ὁ Ἀλεξανδρεύς; c 290 – c 350 AD) was a Greek mathematician of late antiquity known for his Synagoge (Συναγωγή) or Collection (c 340), [1] and for Pappus's hexagon theorem in projective geometry
  • Info: Pappus - Wild Flower Finder
    A pappus is a large mass of (usually white) hairs (or hairs atopped by a ring of finer hairs like an umbrella or parachute) that carry the seeds away by wind





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