Points of the Dirichlet function
We distinguish the rational points Pi = (i/n,1) and the irrational points Q = (i/(n+
/n,0). The lines f and g show they are distinct points of the graph of the Dirichlet function:
(x)=1 for rational, and (x)= 0 for irrational x.
Experiment by changing some elements
iYou may change the values of n, and i (recommended to have the same upper bound).