# Meaning of Notation.

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I am struggling with the notation/language of math.

1. What does f: Z----> Z or f: A--->A or f: N--->N mean? Are these the set of integers, natural numbers or any set in general (it is not the complex set)?

2. If I have:

Let A = {n:n>2} f: A--->A followed by some function does this mean A is a set of n integers?

Please give a clear, simple, explanation with some simple examples if possible.

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## SOLUTION This solution is **FREE** courtesy of BrainMass!

Hi C

Here it is.

If you have any questions - let me know.

Check out:

http://en.wikipedia.org/wiki/List_of_mathematical_symbols

Cheers

Yinon

https://brainmass.com/math/number-theory/meaning-notation-510760