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Topic: Origin of the Sub-factorial Notation
Replies: 2   Last Post: Jun 3, 2009 12:14 PM

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Pat Ballew

Posts: 74
Registered: 12/3/04
Re: Origin of the Sub-factorial Notation
Posted: Jun 3, 2009 12:14 PM
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Dave,
Thanks, I was aware of the origin of the term, and both Whitworth and Crystal's notations..What I was particularly searching for is the use of the "!n" notation. From Cajori's NOT mentioning it, I assume it occurs after the 1928-1929 period when the book was published... If it does not appear in the article you mention, it may be that it was created after the 1950's date you gave.

Thanks for the references, I shall continue to search..

Pat



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