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Catalan numbers
(redirected from Catalan number)

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Catalan numbers [′kat·əl·ən ‚nəm·bərz]
(mathematics)
The numbers,cn, which count the ways to insert parentheses in a string ofnterms so that their product may be unambiguously carried out by multiplying two quantities at a time.
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With three words (ignoring the article "a"), the Catalan number 2 tells us we have two essentially different ways to insert parentheses.
Using mathematical parentheses in English by Golomb, Solomon W. / Word Ways
Speakers of Catalan number about eight million, so there are enough around to get you into serious trouble.
Falsest of friends by Sutherland, Fraser / Verbatim
 
 
 
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