The 1954 Statelessness Status Convention provided a definition of a stateless person (which has since become part of customary international law, according to the International Law Commission), and sets out a number of rights that stateless persons should enjoy.
The ratio of two integers P and Q can be expressed as P : Q or P/Q. In both cases, you may divided P and Q by their greatest common factor so as to express the ratio in its simplest form.
Next are the rational numbers. A rational number is any number that can be expressed as the quotient of two integers. We can use any of these fraction notations to express rational numbers: a is called the numerator and b is called the denominator. The denominator cannot be zero.