According to Gauss: The triangular number Tn solves the “handshake problem” of counting the number of handshakes if each person in a room with n + 1 people shakes hands once with each person. In other words, the solution to the handshake problem of n people is Tn−1. The function T is the additive analog of the factorial function, which is the products of integers from 1 to n.
As one of the world’s most famous mathematicians, Gauss’s achievements include his contributions to number theory, proving the fundamental theorem of algebra, independently arriving at the least squares method (line of best fit), and introducing the bell curve (Gaussian distribution) in statistics.
Words of Wisdom
It is not knowledge, but the act of learning, not possession but the act of getting there, which grants the greatest enjoyment.