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The title and tags are a little goofy since I'm not quite sure what to call this. This may be more of a computer science question, but I thought I'd ask here too.

I have two integers n and m that are arbitrarily (logically) related with integers x and y, respectively, where all values are finite and > 0.

I'd like to know if there's a way to combine n and x, and m and y, into two numbers (integer, decimal, whatever) such that neither will overlap. Additionally, I need to be able to perform some kind of operation to reverse the previous process to once again obtain n and x, and m and y.

Let me know if this isn't clear. Thanks in advance!

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As far as I can tell, this is a question about two numbers, not four. –  Qiaochu Yuan Sep 27 '10 at 18:34
    
@Qiaochu Yuan yeah, you're right. –  Nalandial Sep 27 '10 at 20:24

1 Answer 1

up vote 3 down vote accepted

You could employ a pairing function, e.g. Cantor's or others.

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