bijection of R: R <--> Rx.....xR

From: "Timothy Golden http://www.BandTechnology.com" <tttpppggg@xxxxxxxxx>
Date: 7 Sep 2005 05:40:50 -0700

Dirk Once wrote:
>there is also a bijection
> R <--> RxRxR
>and in fact between R and the product set of any countable
>number of R's:
> R <--> Rx.....xR

Could someone please expound on this?
How does R map to RxR?

-Tim

.

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