Z attach x, what is the name of this?

  • Thread starter TylerH
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  • #1
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I'm trying to reveiw the concepts of a proof class I took last summer, and there's one thing that's killing me. What is it called and what's the notation used when you "attach" something to a set. For example, my professor would define "the integers attach √2" as the set {a+b√2 : a, b in Z} or the complex numbers as "the real numbers attach i."

Thanks,
Tyler
 
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Answers and Replies

  • #3
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YES!!! Thank you.

Is the "attach" verbal notation common? It isn't mentioned on the Wikipedia page. How do you usually say Z(i)?
 

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