Decreasing function of the Euclidean distance Min or Max ?

[pocman]

Hi,

I'm going through Tim Salimans' model.
The decreasing function is coded as :

def f_distance(gxy_pos, halo_pos, c):
    # foo_position should be a 2-d numpy array
    return np.maximum(euclidean_distance(gxy_pos, halo_pos), c)[:, None]

Same for tim's code :

x(:,j) = x(:,j)./repmat(max(dist(:,j),minr_big),2,1);

But the latex seems to be off :

f(ri,j)=1/min(ri,j,240)