This is called Diophantine approximation. http://en.wikipedia.org/wiki/Diophantine_approximation http://en.wikipedia.org/wiki/Diophantine_approximation p.s. T

This is called Diophantine approximation. http://en.wikipedia.org/wiki/Diophantine_approximation http://en.wikipedia.org/wiki/Diophantine_approximation p.s. Take a look at the "Liouville's result" part.