It's wonderful when an interaction makes you question that which you thought you knew. My understanding was that, in order to produce a triangle or sawtooth wa

It's wonderful when an interaction makes you question that which you thought you knew. My understanding was that, in order to produce a triangle or sawtooth wave, you need to have a phase control. This is because of the (-1)^k term in the Fourier expansion, as seen in Wikipedia. After seeing this site produce a sawtooth wave with no phase control, my mind is blown apart, into tiny little pieces.