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| | Counting Argument Encyclopedia Article, Definition, History, Biography (Site not responding. Last check: 2007-10-26) |
 | | Enumerative combinatorics came to prominence because counting configurations is essential to elementary probability, starting with the work of Pascal and others. |
 | | Two of the most prominent combinatorialists of recent times were the prolific problem-raiser and problem-solver Paul Erdős, who worked mainly on extremal questions, and Gian-Carlo Rota, who helped to formalize the subject beginning in the 1960s, mostly in enumeration and algebraization. |
 | | However, given that we are looking at a counting function, the presence of the √5 in the result may be considered unaesthetic. |
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