Hi, Is there any interest in a library for min-plus (dioid) algebra and min-plus convolution. In min-plus algebra sum is replaced by minimum operator, while product is replaced by sum operator. Thus, here, (3+4)*5 = min(3,4) + 5 = 3 + 5 = 8. Min-plus convolution is convolution of flow curves, for example, for flows in Computer Networks. It goes like this :- (f conv g)(t) = min(f(s) + g(t-s)). These convolutions will be important for deterministic characterization of networks. We have implemented peak rate, affine, ratelatency and piecewise linear curves and corresponding convolutions. These whole thing will be applicable to wide areas starting from piecewise approximation of curves to simulation of flow equations. Regards, Reetesh Mukul