Rationalnumber can approximate to realnumber, use the notation of approximate one can prove Riemann function isn t differentiable anywhere, that the Rational points are dense in unit circle.
Based on the number set, a new commutative semi-group is established in the integer number and extended in number fields of rationalnumber, real number and the complex number.
Rationalnumber can approximate to realnumber use the notation of approximate one can prove riemann function isn't differentiable anywhere that the rational points are dense in unit circle .