Hey guys,(adsbygoogle = window.adsbygoogle || []).push({});

I was reading Kenneth's Discrete Mathematics and I came across this definition in the function chapter:

Let f be a function from A to B and let S be a subset of A.The image of S under the function f is the subset of B that consists of the images of the elements of S.We denote the image of S by f(S), so f(S) = {t | ∃s∈S (t = f(s))}.

We also use the shorthand {f(s) | s ∈ S} to denote this set.

My questions is:

1) What is the purpose of set S?

From my understanding, S is just a subset of A which has corresponding image for each element of S?

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# S a subset of A

Tags:

Loading...

Similar Threads for subset |
---|

B Subsets of Rational Numbers and Well-Ordered Sets |

**Physics Forums | Science Articles, Homework Help, Discussion**