http: // docs. python. org/ 2/ tutorial/ datastructures. html puis

k= 1,...n
k5k= 1,...n
k= 1, . . . 16 17
a= (x, y), b = (u, v)
d(a, b) = k(x, y)−(u, v)k=p(x−u)2+ (y−v)2

x=y= 0, u = 1, v = 0, . . . 5
x=y= 0, u = 0, . . . 5, v = 0, . . . 5
x= 0, u = 5, y = 0, . . . 5, v = 0, . . . 5

d(x, y)

7→
7→