That is the property of infinite density of rational numbers. If x and y are any two rational numbers then w = (x + y)/2 is a rational number between them. And then there is a rational number between x and w. This process can be continued without end.
No, there is not.
The fact that the set of rational numbers is a mathematical Group.
Please don't write "the following" if you don't provide a list. This is the situation for some common number sets:* Whole numbers / integers do NOT have this property. * Rational numbers DO have this property. * Real numbers DO have this property. * Complex numbers DO have this property. * The set of non-negative rational numbers, as well as the set of non-negative real numbers, DO have this property.
All rational numbers are real numbers.
There are infinitely many rational numbers between any two rational rational numbers (no matter how close).
The Density Property states that, between two rational numbers on a number line there is another rational number. Mark some fractions on a number line. No matter how dense the number line is, there still is another number between the two numbers.
That is the property of infinite density of rational numbers. If x and y are any two rational numbers then w = (x + y)/2 is a rational number between them. And then there is a rational number between x and w. This process can be continued without end.
No, there is not.
The relevant property is the closure of the set of rational numbers under the operation of addition.
The fact that the set of rational numbers is a mathematical Group.
Please don't write "the following" if you don't provide a list. This is the situation for some common number sets:* Whole numbers / integers do NOT have this property. * Rational numbers DO have this property. * Real numbers DO have this property. * Complex numbers DO have this property. * The set of non-negative rational numbers, as well as the set of non-negative real numbers, DO have this property.
yes
I t is the number 0, which has the property that x + 0 = 0 + x = x for all rational numbers x.
Numbers are infinitely dense. Between any two rational or real numbers, no matter how close, there are infinitely many numbers.
yes
There are no consecutive rational numbers. Between any two rational numbers there are an infinity of rational numbers.