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=== Infinity symbol ===
 
=== Infinity symbol ===
[[Image:John Wallis.jpg|thumb|200px|right|John Wallis introduced the infinity symbol to mathematical literature.]]
   
The precise origin of the infinity symbol '''∞''' is unclear. One possibility is suggested by the name it is sometimes called — the [[lemniscate]], from the Latin ''lemniscus'', meaning "ribbon." One can imagine walking forever along a simple loop formed from a ribbon.
 
The precise origin of the infinity symbol '''∞''' is unclear. One possibility is suggested by the name it is sometimes called — the [[lemniscate]], from the Latin ''lemniscus'', meaning "ribbon." One can imagine walking forever along a simple loop formed from a ribbon.
  

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