Real world example of Unification in First Order Logic?

Posted by Sebi on Stack Overflow See other posts from Stack Overflow or by Sebi
Published on 2010-06-02T21:18:45Z Indexed on 2010/06/03 9:34 UTC
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computer-science

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logic

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unification

I know this is only part of a programming question, but at the moment, I'm doing a little bit of logic programming. One thing I still don't understand correctly is Unification in First Order Logic.

I read the Wikipedia article and it is more or less clear that the purpose is searching a term that unifies two sentences... There are also examples in this article but I just don't get the point why this should be useful. Can anyone give an example with real world objects instead of A, B, C,, etc.? I hope this will help me to understand. Thanks

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