What to choose for co-domain, somewhat confused

  • Thread starter Thread starter jaejoon89
  • Start date Start date
  • Tags Tags
    Confused
Click For Summary
SUMMARY

The discussion clarifies the distinction between co-domain and range in mathematical functions. The co-domain is defined as the entire space a function maps to, such as R^2 or R^3, while the range is a subset of that space, for example, R^+ (all positive reals). It is established that the co-domain must encompass all possible outcomes of the function, as specified in its definition. For further understanding, examples can be found on the Wikipedia page for codomain.

PREREQUISITES
  • Understanding of mathematical functions and their properties
  • Familiarity with concepts of range and co-domain
  • Basic knowledge of real number spaces such as R^2 and R^3
  • Ability to interpret mathematical definitions and notation
NEXT STEPS
  • Research the formal definition of co-domain in mathematical literature
  • Explore examples of functions with different co-domains and ranges
  • Learn about the implications of choosing different co-domains in function mapping
  • Study related concepts such as injective, surjective, and bijective functions
USEFUL FOR

Mathematicians, educators, students studying advanced mathematics, and anyone interested in the properties of functions and their mappings.

jaejoon89
Messages
187
Reaction score
0
When you choose the co-domain can it just be anything that is greater than the range (i.e. the image)? In general, should the co-domain just be whatever space it maps to: R^2, R^3, etc. whereas the range is a subset of that space such as R^+ (all positive reals)?
 
Physics news on Phys.org
Yes, the codomain is the space that the function maps to - that is, all the possible outcomes. This is usually given in the definition of the function. The image/range is what actually comes out. The wikipedia page for http://en.wikipedia.org/wiki/Codomain" has some examples
 
Last edited by a moderator:

Similar threads

  • · Replies 2 ·
Replies
2
Views
1K
  • · Replies 1 ·
Replies
1
Views
1K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 59 ·
2
Replies
59
Views
6K
  • · Replies 1 ·
Replies
1
Views
5K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 21 ·
Replies
21
Views
4K
  • · Replies 2 ·
Replies
2
Views
4K
  • · Replies 3 ·
Replies
3
Views
2K