[1] viXra:1103.0031 [pdf] submitted on 10 Mar 2011
Authors: Marco Ripà
Comments: 3 pages
In this paper we provide an inverse proof of the relation between a particular class of double sums
and tetrahedral numbers. Thus, we present a compact formula to reduce the number of calculations
necessary to solve such a kind of problems. The initial identity is confirmed �a posteriori� using
the formula mentioned above.
Category: Algebra