example of bijection

It is known that the Cartesian productMathworldPlanetmath of numerable sets are numerable, then the productPlanetmathPlanetmath × is. Here we give an explicit mapping which does the task:


It is almost easy to check bijectivity and curious how the elements of × are labeled.

Title example of bijection
Canonical name ExampleOfBijection
Date of creation 2013-03-22 16:30:18
Last modified on 2013-03-22 16:30:18
Owner juanman (12619)
Last modified by juanman (12619)
Numerical id 7
Author juanman (12619)
Entry type Example
Classification msc 03-00
Related topic ParingFunction