# How to denote a function mapping of two parameters to an output?

I am wondering how to denote something like this:

I have a function mapping two sets to a set of vectors and am currently denoting it as so:

$p: [F, \Sigma] \to S$

I am wondering if this is correct, and if not, what is?

I am a computer science student and did a year of mathematics at degree level, but that was a long time ago and I have forgotten a lot of the basics.

If I am wrong I would appreciate a semi in depth answer as to why.

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A function mapping two arguments from $A$ and $B$ respectively to $C$ is denoted

$$f:A\times B\to C,$$

where $\times$ here denotes the Cartesian product.

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Thank you, this is exactly what I had forgotten. It looks so familiar now I see it again. PS. How did you center on here? I tried a \begin and \end{center}, but it did not like that. – Clintonio Apr 12 '12 at 21:46
@Clintonio: Double dollar signs. $$f:A\times B\to C.$$ becomes $$f:A\times B\to C.$$ – anon Apr 12 '12 at 22:10