Difference between revisions of "Hockey Stick Theorem"

Latest revision as of 16:18, 9 June 2015

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+#REDIRECT[[Combinatorial identity]]
-                                                                                                            '''Hockey-stick theorem'''
-The Hockey-stick theorem states: {n \choose 0}+{n+1 \choose 1}+\cdots+{n+k \choose k} = {n+k+1 \choose k}. Its name is due to the "hockey-stick" which appears when the numbers are plotted on Pascal's Triangle, as shown in the representation of the theorem to the right (where n=2 and k=3).