05/28/2008
(n,2) combination
A simple formula in combinatorics: for a combination (n,2) (the number of possible pairs formed by n):
(n,2) = Tn - n
where Tn is the triangle number (eg T5 = 5 + 4 + 3 + 2 + 1 = 15). Proof in file.
(n,2).rtf
11:14 Posted in Mathematics | Permalink | Comments (0) | Email this | Tags: combinatorics
05/25/2008
And Function
For people interested in combinatorics…
An excerpt from Tempest - The Transition (http://www.lulu.com/content/1929564)
And Function.rtf
21:50 Posted in Mathematics | Permalink | Comments (0) | Email this | Tags: combinatorics