Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsHow the Superposition of the Periodic Pulsations of +1 and -1 Generates Values of the Mertens Functionhttp://demonstrations.wolfram.com/HowTheSuperpositionOfThePeriodicPulsationsOf1And1GeneratesVa/]]>http://demonstrations.wolfram.com/HowTheSuperpositionOfThePeriodicPulsationsOf1And1GeneratesVa/