closeHello! Click here if you would like to know what Factolex is about.

Real number

One more term with the same name exists. Show the other term
Start collecting facts
These are the best facts for Real number, collected by our users from the web:
(You can find the source through the icon at the end of each fact)
  1. In mathematics, the real numbers may be described informally in several different ways

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on November 12, 2008
  2. include both rational numbers, such as 42 and −23/129, and irrational numbers, such as pi and the square root of two; or, a real number can be given by an infinite decimal representation, such as 2.4871773339...., where the digits continue in s

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on November 12, 2008
  3. These descriptions of the real numbers, while intuitively accessible, are not sufficiently rigorous for the purposes of pure mathematics

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on November 12, 2008
  4. The discovery of a suitably rigorous definition of the real numbers — indeed, the realisation that a better definition was needed — was one of the most important developments of 19th century mathematics

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on November 12, 2008
  5. Popular definitions in use today include equivalence classes of Cauchy sequences of rational numbers; Dedekind cuts; a more sophisticated version of "decimal representation"; and an axiomatic definition of the real numbers as the unique complete Arch

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on November 12, 2008
Displaying the top 5 of 15 facts in total. Show all 15 factsShow 3 more or all 15 facts
Do you know more? Submit a new fact

Add a new fact

A fact should only contain one sentence, describing an aspect of the term.

Fact
Example: located on the west coast of the U.S
Source
Tags
optional

Example: geography location -- separate tags with spaces

Add one more fact or give me some inspiration from:

More lexica »Featured Lexica

Look at what our users have created already.

Feedback

Please tell us what you think about our project

Contribute

On Factolex you can add facts and terms that you believe are missing.

To be sure that the term hasn't already been entered, please use the search function before doing so.

Home  |  About  |  FAQ  |  Feedback  |  Tools  |  Stats  |  Contact Us  |  API  |  Blog
Change language to: