The as_set method only works if there is a symbol in the expression. We seem to be tying ourselves in knots with Heaviside(0). Things like diff etc need to specify the value of the Heaviside function ...

// t control steepness of step function: --> 0 more linear, --> inf more like // Heaviside function (piecewise constant function x<0--> -1 , x>0 --> 1) However, when I was trying to plot the function, ...

Central Distribution,Channel Signal,Circular Variance,Coherence Time,Degrees Of Freedom,Detection Performance,Detection Probability,Detection Threshold,Detector ...