In Grid representation, in a translational scan the mobile molecule B moves through the grid representing the static molecule A and a signal describing shape complementarity, fc, is generated for each mapping. Mathematically the correlation function, fc, of fA and fB is given by ______ where N is the number of grid points along the cubic axes i, j, and k and α, β, and γ are the translational vectors of the mobile molecule B relative to the static one A.