- Spijker's lemma
In
mathematics , Spijker's lemma is a result in the theory ofrational mapping s of theRiemann sphere . It states that the image of acircle under a complex rational map withnumerator anddenominator having degree at most "n" has length at most 2"nπ".ee also
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Buffon's needle External links
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References
*cite journal|last = Wegert|first = Elias|coauthors = Trefethen, Lloyd N.|title = From the Buffon Needle Problem to the Kreiss Matrix Theorem|journal = The American Mathematical Monthly|volume = 101|issue = 2|date = Feb 1994|pages = 132–139|url = http://links.jstor.org/sici?sici=0002-9890%28199402%29101%3A2%3C132%3AFTBNPT%3E2.0.CO%3B2-2&size=LARGE|month = Feb|year = 1994|doi = 10.2307/2324361
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