function [curvature] = Ukr0(k, n, coords, r0)
%UNTITLED2 Summary of this function goes here
%   Detailed explanation goes here
    curvature = 0;
    for i = 1:n
       if i == k
       else
           curvature = curvature + Ujkr0(i, k, coords, r0);
       end
    end
end